Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

Apache Jenkins Server-2
For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/

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-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit


Specific tests:

    XML :

       Parsing Error(s):
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml

    findbugs :

       module:hadoop-common-project
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 604 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:604 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 604]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:root
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 604 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:604 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 604]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-common-project/hadoop-common
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 604 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:604 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 604]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-tools/hadoop-aws
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]

    findbugs :

       module:hadoop-tools/hadoop-azure
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer/hadoop-dynamometer-infra
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools/hadoop-fs2img
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]

    findbugs :

       module:hadoop-tools/hadoop-openstack
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]

    findbugs :

       module:hadoop-yarn-project
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    Failed junit tests :

       hadoop.hdfs.TestFileChecksum
       hadoop.hdfs.TestFileChecksumCompositeCrc
       hadoop.hdfs.server.namenode.ha.TestBootstrapAliasmap
       hadoop.hdfs.server.federation.router.TestRouter
       hadoop.hdfs.server.federation.router.TestRouterRpc
       hadoop.mapreduce.v2.TestMRJobsWithProfiler
       hadoop.yarn.applications.distributedshell.TestDistributedShell
       hadoop.yarn.service.TestYarnNativeServices
       hadoop.yarn.client.TestRMFailoverProxyProvider
       hadoop.yarn.client.TestNoHaRMFailoverProxyProvider
       hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption
       hadoop.yarn.server.timelineservice.security.TestTimelineAuthFilterForV2
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineReaderImpl
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreCollectionCreator
       hadoop.yarn.server.timelineservice.documentstore.writer.cosmosdb.TestCosmosDBDocumentStoreWriter
       hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb.TestCosmosDBDocumentStoreReader
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineWriterImpl
       hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage
     

   cc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-compile-cc-root.txt  [48K]

   javac:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-compile-javac-root.txt  [604K]

   checkstyle:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-checkstyle-root.txt  [16M]

   mvnsite:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-mvnsite-root.txt  [548K]

   pathlen:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/pathlen.txt  [12K]

   pylint:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-patch-pylint.txt  [60K]

   shellcheck:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-patch-shellcheck.txt  [20K]

   shelldocs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-patch-shelldocs.txt  [96K]

   whitespace:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/whitespace-eol.txt  [13M]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/whitespace-tabs.txt  [1.9M]

   xml:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/xml.txt  [24K]

   javadoc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/diff-javadoc-javadoc-root.txt  [4.0K]

   findbugs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-common-project-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-hdfs-project-warnings.html  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server-warnings.html  [68K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-root-warnings.html  [144K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-common-project_hadoop-common-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-client-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools_hadoop-aws-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools_hadoop-azure-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer_hadoop-dynamometer-infra-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools_hadoop-fs2img-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-tools_hadoop-openstack-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-applicationhistoryservice-warnings.html  [20K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase_hadoop-yarn-server-timelineservice-hbase-client-warnings.html  [12K]

   unit:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt  [440K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt  [500K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt  [100K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-applications-distributedshell.txt  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core.txt  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt  [112K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-tests.txt  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-documentstore.txt  [40K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-tests.txt  [24K]

   asflicense:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/1/artifact/out/patch-asflicense-problems.txt  [4.0K]

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

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For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/2/

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

Apache Jenkins Server-2
For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/

[Sep 17, 2020 5:43:00 AM] (noreply) HDFS-15578: Fix the rename issues with fallback fs enabled (#2305). Contributed by Uma Maheswara Rao G.
[Sep 17, 2020 9:20:08 AM] (noreply) HDFS-15568. namenode start failed to start when dfs.namenode.max.snapshot.limit set. (#2296)
[Sep 17, 2020 1:11:42 PM] (Stephen O'Donnell) HDFS-15415. Reduce locking in Datanode DirectoryScanner. Contributed by Stephen O'Donnell
[Sep 17, 2020 5:39:19 PM] (noreply) HADOOP-17208. LoadBalanceKMSClientProvider#deleteKey should invalidateCache via all KMSClientProvider instances. (#2259)
[Sep 17, 2020 5:57:19 PM] (Szilard Nemeth) YARN-9333. TestFairSchedulerPreemption.testRelaxLocalityPreemptionWithNoLessAMInRemainingNodes fails intermittently. Contributed by Peter Bacsko




-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit


Specific tests:

    XML :

       Parsing Error(s):
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml

    findbugs :

       module:hadoop-common-project
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:root
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-common-project/hadoop-common
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-tools/hadoop-aws
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]

    findbugs :

       module:hadoop-tools/hadoop-azure
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer/hadoop-dynamometer-infra
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools/hadoop-fs2img
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]

    findbugs :

       module:hadoop-tools/hadoop-openstack
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]

    findbugs :

       module:hadoop-yarn-project
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    Failed junit tests :

       hadoop.crypto.key.kms.server.TestKMS
       hadoop.hdfs.TestFileChecksum
       hadoop.hdfs.TestGetFileChecksum
       hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped
       hadoop.hdfs.TestSnapshotCommands
       hadoop.hdfs.server.sps.TestExternalStoragePolicySatisfier
       hadoop.hdfs.TestFileChecksumCompositeCrc
       hadoop.hdfs.server.federation.router.TestRouter
       hadoop.mapreduce.v2.TestMRJobsWithProfiler
       hadoop.yarn.sls.appmaster.TestAMSimulator
       hadoop.yarn.applications.distributedshell.TestDistributedShell
       hadoop.yarn.client.TestRMFailoverProxyProvider
       hadoop.yarn.client.TestNoHaRMFailoverProxyProvider
       hadoop.yarn.server.resourcemanager.security.TestDelegationTokenRenewer
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreCollectionCreator
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineReaderImpl
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineWriterImpl
       hadoop.yarn.server.timelineservice.documentstore.writer.cosmosdb.TestCosmosDBDocumentStoreWriter
       hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb.TestCosmosDBDocumentStoreReader
       hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage
     

   cc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-compile-cc-root.txt  [48K]

   javac:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-compile-javac-root.txt  [604K]

   checkstyle:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-checkstyle-root.txt  [16M]

   mvnsite:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-mvnsite-root.txt  [552K]

   pathlen:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/pathlen.txt  [12K]

   pylint:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-patch-pylint.txt  [60K]

   shellcheck:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-patch-shellcheck.txt  [20K]

   shelldocs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-patch-shelldocs.txt  [96K]

   whitespace:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/whitespace-eol.txt  [13M]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/whitespace-tabs.txt  [1.9M]

   xml:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/xml.txt  [24K]

   javadoc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/diff-javadoc-javadoc-root.txt  [4.0K]

   findbugs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-common-project-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-hdfs-project-warnings.html  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server-warnings.html  [68K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-root-warnings.html  [144K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-common-project_hadoop-common-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-client-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools_hadoop-aws-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools_hadoop-azure-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer_hadoop-dynamometer-infra-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools_hadoop-fs2img-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-tools_hadoop-openstack-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-applicationhistoryservice-warnings.html  [20K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase_hadoop-yarn-server-timelineservice-hbase-client-warnings.html  [12K]

   unit:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-common-project_hadoop-kms.txt  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt  [588K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt  [48K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt  [100K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-tools_hadoop-sls.txt  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-applications-distributedshell.txt  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt  [108K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-documentstore.txt  [40K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-tests.txt  [24K]

   asflicense:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/3/artifact/out/patch-asflicense-problems.txt  [4.0K]

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

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For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/

[Sep 18, 2020 9:48:10 AM] (noreply) HDFS-15585: ViewDFS#getDelegationToken should not throw UnsupportedOperationException. (#2312). Contributed by Uma Maheswara Rao G.
[Sep 18, 2020 11:58:11 AM] (Ayush Saxena) HDFS-15438. Setting dfs.disk.balancer.max.disk.errors = 0 will fail the block copy. Contributed by AMC-team.
[Sep 18, 2020 5:28:14 PM] (noreply) HADOOP-15136. Correct typos in filesystem.md (#2314)
[Sep 19, 2020 12:52:11 AM] (noreply) HADOOP-17203: Revert HADOOP-17183. ABFS: Enabling checkaccess on ABFS
[Sep 19, 2020 1:28:44 AM] (tmarq) HADOOP-17215: Support for conditional overwrite.




-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit


Specific tests:

    XML :

       Parsing Error(s):
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml

    findbugs :

       module:hadoop-common-project
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:root
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-common-project/hadoop-common
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-tools/hadoop-aws
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]

    findbugs :

       module:hadoop-tools/hadoop-azure
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer/hadoop-dynamometer-infra
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools/hadoop-fs2img
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]

    findbugs :

       module:hadoop-tools/hadoop-openstack
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]

    findbugs :

       module:hadoop-yarn-project
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    Failed junit tests :

       hadoop.crypto.key.kms.server.TestKMS
       hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes
       hadoop.hdfs.TestSnapshotCommands
       hadoop.hdfs.TestFileChecksumCompositeCrc
       hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped
       hadoop.hdfs.TestFileChecksum
       hadoop.hdfs.server.sps.TestExternalStoragePolicySatisfier
       hadoop.hdfs.server.federation.security.TestRouterSecurityManager
       hadoop.hdfs.server.federation.router.TestRouter
       hadoop.mapreduce.v2.TestMRJobsWithProfiler
       hadoop.yarn.applications.distributedshell.TestDistributedShell
       hadoop.yarn.client.TestRMFailoverProxyProvider
       hadoop.yarn.client.TestNoHaRMFailoverProxyProvider
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineWriterImpl
       hadoop.yarn.server.timelineservice.documentstore.writer.cosmosdb.TestCosmosDBDocumentStoreWriter
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineReaderImpl
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreCollectionCreator
       hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb.TestCosmosDBDocumentStoreReader
       hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage
     

   cc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-compile-cc-root.txt  [48K]

   javac:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-compile-javac-root.txt  [604K]

   checkstyle:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-checkstyle-root.txt  [16M]

   mvnsite:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-mvnsite-root.txt  [548K]

   pathlen:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/pathlen.txt  [12K]

   pylint:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-patch-pylint.txt  [60K]

   shellcheck:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-patch-shellcheck.txt  [20K]

   shelldocs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-patch-shelldocs.txt  [96K]

   whitespace:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/whitespace-eol.txt  [13M]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/whitespace-tabs.txt  [1.9M]

   xml:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/xml.txt  [24K]

   javadoc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/diff-javadoc-javadoc-root.txt  [4.0K]

   findbugs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-common-project-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-hdfs-project-warnings.html  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server-warnings.html  [68K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-root-warnings.html  [144K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-common-project_hadoop-common-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-client-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools_hadoop-aws-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools_hadoop-azure-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer_hadoop-dynamometer-infra-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools_hadoop-fs2img-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-tools_hadoop-openstack-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-applicationhistoryservice-warnings.html  [20K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase_hadoop-yarn-server-timelineservice-hbase-client-warnings.html  [12K]

   unit:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-common-project_hadoop-kms.txt  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt  [584K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt  [52K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt  [100K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-applications-distributedshell.txt  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-documentstore.txt  [40K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-tests.txt  [24K]

   asflicense:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/4/artifact/out/patch-asflicense-problems.txt  [4.0K]

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

Apache Jenkins Server-2
For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/

[Sep 19, 2020 3:47:02 PM] (noreply) HADOOP-17270. Fix testCompressorDecompressorWithExeedBufferLimit to c… (#2311)
[Sep 20, 2020 3:24:25 AM] (Ayush Saxena) HDFS-15579. RBF: The constructor of PathLocation may got some misunderstanding. Contributed by Janus Chow.




-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit


Specific tests:

    XML :

       Parsing Error(s):
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml

    findbugs :

       module:hadoop-common-project
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:root
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-common-project/hadoop-common
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-tools/hadoop-aws
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]

    findbugs :

       module:hadoop-tools/hadoop-azure
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer/hadoop-dynamometer-infra
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools/hadoop-fs2img
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]

    findbugs :

       module:hadoop-tools/hadoop-openstack
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]

    findbugs :

       module:hadoop-yarn-project
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    Failed junit tests :

       hadoop.crypto.key.kms.server.TestKMS
       hadoop.hdfs.server.namenode.TestFileTruncate
       hadoop.hdfs.TestSnapshotCommands
       hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes
       hadoop.hdfs.TestDecommissionWithStripedBackoffMonitor
       hadoop.hdfs.TestFileChecksumCompositeCrc
       hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped
       hadoop.hdfs.TestFileChecksum
       hadoop.hdfs.server.namenode.TestNameNodeRetryCacheMetrics
       hadoop.hdfs.server.sps.TestExternalStoragePolicySatisfier
       hadoop.hdfs.TestStripedFileAppend
       hadoop.hdfs.server.federation.router.TestRouter
       hadoop.mapreduce.v2.TestMRJobsWithProfiler
       hadoop.yarn.applications.distributedshell.TestDistributedShell
       hadoop.yarn.client.TestRMFailoverProxyProvider
       hadoop.yarn.client.TestNoHaRMFailoverProxyProvider
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineWriterImpl
       hadoop.yarn.server.timelineservice.documentstore.writer.cosmosdb.TestCosmosDBDocumentStoreWriter
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineReaderImpl
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreCollectionCreator
       hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb.TestCosmosDBDocumentStoreReader
       hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage
     

   cc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-compile-cc-root.txt  [48K]

   javac:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-compile-javac-root.txt  [604K]

   checkstyle:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-checkstyle-root.txt  [16M]

   mvnsite:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-mvnsite-root.txt  [548K]

   pathlen:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/pathlen.txt  [12K]

   pylint:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-patch-pylint.txt  [60K]

   shellcheck:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-patch-shellcheck.txt  [20K]

   shelldocs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-patch-shelldocs.txt  [96K]

   whitespace:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/whitespace-eol.txt  [13M]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/whitespace-tabs.txt  [1.9M]

   xml:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/xml.txt  [24K]

   javadoc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/diff-javadoc-javadoc-root.txt  [4.0K]

   findbugs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-common-project-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-hdfs-project-warnings.html  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server-warnings.html  [68K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-root-warnings.html  [144K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-common-project_hadoop-common-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-client-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools_hadoop-aws-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools_hadoop-azure-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer_hadoop-dynamometer-infra-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools_hadoop-fs2img-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-tools_hadoop-openstack-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-applicationhistoryservice-warnings.html  [20K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase_hadoop-yarn-server-timelineservice-hbase-client-warnings.html  [12K]

   unit:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-common-project_hadoop-kms.txt  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt  [588K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt  [48K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt  [96K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-applications-distributedshell.txt  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-documentstore.txt  [40K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-tests.txt  [24K]

   asflicense:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/5/artifact/out/patch-asflicense-problems.txt  [4.0K]

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

Apache Jenkins Server-2
For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/

[Sep 20, 2020 6:10:05 AM] (noreply) MAPREDUCE-7294. Only application master should upload resource to Yarn Shared Cache (#2223)
[Sep 21, 2020 3:20:08 AM] (Ayush Saxena) HDFS-14811. RBF: TestRouterRpc#testErasureCoding is flaky. Contributed by Chen Zhang.




-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit


Specific tests:

    XML :

       Parsing Error(s):
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml

    findbugs :

       module:hadoop-common-project/hadoop-common
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-common-project
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]

    findbugs :

       module:hadoop-hdfs-project
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer/hadoop-dynamometer-infra
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools/hadoop-dynamometer
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:hadoop-tools/hadoop-openstack
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]

    findbugs :

       module:hadoop-tools/hadoop-aws
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]

    findbugs :

       module:hadoop-tools/hadoop-azure
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]

    findbugs :

       module:hadoop-tools/hadoop-fs2img
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]

    findbugs :

       module:hadoop-tools
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]

    findbugs :

       module:root
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Load of known null value in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 469]
       Redundant nullcheck of stream, which is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be non-null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 436]
       Redundant nullcheck of stream which is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:is known to be null in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() Redundant null check at AbfsHttpOperation.java:[line 469]
       Nullcheck of jp at line 443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:443 of value previously dereferenced in org.apache.hadoop.fs.azurebfs.services.AbfsHttpOperation.processStorageErrorResponse() At AbfsHttpOperation.java:[line 443]
       Nullcheck of s3AFileSystem at line 304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:304 of value previously dereferenced in org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.checkIfS3BucketIsGuarded(List) At S3GuardTool.java:[line 304]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Load of known null value in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) At HttpResponseUtils.java:[line 70]
       Redundant nullcheck of instream, which is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be non-null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 52]
       Redundant nullcheck of instream which is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:is known to be null in org.apache.hadoop.fs.swift.util.HttpResponseUtils.getResponseBody(HttpResponse) Redundant null check at HttpResponseUtils.java:[line 70]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of out at line 328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:328 of value previously dereferenced in org.apache.hadoop.hdfs.server.namenode.ImageWriter.writeMD5(String) At ImageWriter.java:[line 328]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Nullcheck of fsdis at line 152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:152 of value previously dereferenced in org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(String[]) At SimulatedDataNodes.java:[line 152]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    Failed junit tests :

       hadoop.crypto.key.kms.server.TestKMS
       hadoop.hdfs.tools.TestDFSZKFailoverController
       hadoop.hdfs.TestSnapshotCommands
       hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes
       hadoop.hdfs.TestFileChecksumCompositeCrc
       hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFSStriped
       hadoop.hdfs.TestReplaceDatanodeFailureReplication
       hadoop.hdfs.server.datanode.TestDataNodeUUID
       hadoop.hdfs.TestFileChecksum
       hadoop.hdfs.server.namenode.TestNameNodeRetryCacheMetrics
       hadoop.hdfs.server.namenode.ha.TestPipelinesFailover
       hadoop.hdfs.server.namenode.TestNameNodeMXBean
       hadoop.hdfs.server.federation.router.TestRouterRpcMultiDestination
       hadoop.hdfs.server.federation.router.TestRouter
       hadoop.yarn.client.TestRMFailoverProxyProvider
       hadoop.yarn.client.TestNoHaRMFailoverProxyProvider
       hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineWriterImpl
       hadoop.yarn.server.timelineservice.documentstore.writer.cosmosdb.TestCosmosDBDocumentStoreWriter
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreTimelineReaderImpl
       hadoop.yarn.server.timelineservice.documentstore.TestDocumentStoreCollectionCreator
       hadoop.yarn.server.timelineservice.documentstore.reader.cosmosdb.TestCosmosDBDocumentStoreReader
       hadoop.yarn.applications.distributedshell.TestDistributedShell
       hadoop.mapreduce.v2.TestMRJobsWithProfiler
       hadoop.yarn.sls.appmaster.TestAMSimulator
     

   cc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-compile-cc-root.txt  [48K]

   javac:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-compile-javac-root.txt  [604K]

   checkstyle:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-checkstyle-root.txt  [16M]

   mvnsite:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-mvnsite-root.txt  [364K]

   pathlen:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/pathlen.txt  [12K]

   pylint:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-patch-pylint.txt  [60K]

   shellcheck:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-patch-shellcheck.txt  [20K]

   shelldocs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-patch-shelldocs.txt  [96K]

   whitespace:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/whitespace-eol.txt  [13M]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/whitespace-tabs.txt  [1.9M]

   xml:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/xml.txt  [24K]

   javadoc:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/diff-javadoc-javadoc-root.txt  [4.0K]

   findbugs:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-common-project_hadoop-common-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-common-project-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-client-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-hdfs-project-warnings.html  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server-warnings.html  [68K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-nodemanager-warnings.html  [32K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-applicationhistoryservice-warnings.html  [20K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-warnings.html  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase_hadoop-yarn-server-timelineservice-hbase-client-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-services_hadoop-yarn-services-core-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-yarn-project-warnings.html  [80K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer_hadoop-dynamometer-infra-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools_hadoop-dynamometer-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools_hadoop-openstack-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools_hadoop-aws-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools_hadoop-azure-warnings.html  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools_hadoop-fs2img-warnings.html  [8.0K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-hadoop-tools-warnings.html  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/branch-findbugs-root-warnings.html  [144K]

   unit:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-common-project_hadoop-kms.txt  [12K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt  [444K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt  [516K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client.txt  [28K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-hbase-tests.txt  [24K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-timelineservice-documentstore.txt  [40K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-applications_hadoop-yarn-applications-distributedshell.txt  [16K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-jobclient.txt  [96K]
       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-unit-hadoop-tools_hadoop-sls.txt  [16K]

   asflicense:

       https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/6/artifact/out/patch-asflicense-problems.txt  [4.0K]

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Apache Hadoop qbt Report: trunk+JDK11 on Linux/x86_64

Apache Jenkins Server-2
For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java11-linux-x86_64/7/

[Sep 21, 2020 4:20:16 PM] (noreply) HADOOP-17023. Tune S3AFileSystem.listStatus() (#2257)
[Sep 21, 2020 5:54:13 PM] (noreply) HDFS-15554. RBF: force router check file existence in destinations before adding/updating mount points (#2266). Contributed by Fengnan Li.
[Sep 21, 2020 6:10:51 PM] (noreply) HADOOP-17088.Failed to load XInclude files with relative path. (#2097)
[Sep 21, 2020 7:41:06 PM] (noreply) HADOOP-17259. Allow SSLFactory fallback to input config if ssl-*.xml … (#2301)




-1 overall


The following subsystems voted -1:
    asflicense findbugs mvnsite pathlen shadedclient unit xml


The following subsystems voted -1 but
were configured to be filtered/ignored:
    cc checkstyle javac javadoc pylint shellcheck shelldocs whitespace


The following subsystems are considered long running:
(runtime bigger than 1h  0m  0s)
    unit


Specific tests:

    XML :

       Parsing Error(s):
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-excerpt.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-output-missing-tags2.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/resources/nvidia-smi-sample-output.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/fair-scheduler-invalid.xml
       hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/resources/yarn-site-with-invalid-allocation-file-ref.xml

    findbugs :

       module:hadoop-common-project/hadoop-common
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-common-project
       Nullcheck of cc at line 457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:457 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension$EncryptedKeyVersion) At KeyProviderCryptoExtension.java:[line 457]
       Nullcheck of cc at line 368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:368 of value previously dereferenced in org.apache.hadoop.crypto.key.KeyProviderCryptoExtension$DefaultCryptoExtension.reencryptEncryptedKeys(List) At KeyProviderCryptoExtension.java:[line 368]
       Nullcheck of scope at line 3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:3423 of value previously dereferenced in org.apache.hadoop.fs.FileSystem.createFileSystem(URI, Configuration) At FileSystem.java:[line 3423]
       Nullcheck of out at line 1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:1828 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, CharSequence, Charset) At FileUtil.java:[line 1828]
       Nullcheck of out at line 1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:1763 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, Iterable, Charset) At FileUtil.java:[line 1763]
       Nullcheck of out at line 1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:1691 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileContext, Path, byte[]) At FileUtil.java:[line 1691]
       Nullcheck of out at line 1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:1797 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, CharSequence, Charset) At FileUtil.java:[line 1797]
       Nullcheck of out at line 1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:1725 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, Iterable, Charset) At FileUtil.java:[line 1725]
       Nullcheck of out at line 1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:1663 of value previously dereferenced in org.apache.hadoop.fs.FileUtil.write(FileSystem, Path, byte[]) At FileUtil.java:[line 1663]
       Nullcheck of in at line 376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:376 of value previously dereferenced in org.apache.hadoop.fs.RawLocalFileSystem.concat(Path, Path[]) At RawLocalFileSystem.java:[line 376]
       Nullcheck of in at line 106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:106 of value previously dereferenced in org.apache.hadoop.fs.shell.CopyCommands$Merge.processArguments(LinkedList) At CopyCommands.java:[line 106]
       Nullcheck of fs at line 65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:65 of value previously dereferenced in org.apache.hadoop.fs.viewfs.HCFSMountTableConfigLoader.load(String, Configuration) At HCFSMountTableConfigLoader.java:[line 65]
       Nullcheck of channel at line 430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:430 of value previously dereferenced in org.apache.hadoop.io.IOUtils.fsync(File) At IOUtils.java:[line 430]
       Nullcheck of stream at line 389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:389 of value previously dereferenced in org.apache.hadoop.io.IOUtils.listDirectory(File, FilenameFilter) At IOUtils.java:[line 389]
       Redundant nullcheck of is, which is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:is known to be non-null in org.apache.hadoop.util.ApplicationClassLoader.<static initializer for ApplicationClassLoader>() Redundant null check at ApplicationClassLoader.java:[line 79]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:is known to be non-null in org.apache.hadoop.util.JsonSerialization.fromResource(String) Redundant null check at JsonSerialization.java:[line 213]
       Nullcheck of dataInputStream at line 248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:248 of value previously dereferenced in org.apache.hadoop.util.JsonSerialization.load(FileSystem, Path) At JsonSerialization.java:[line 248]
       Nullcheck of in at line 204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:204 of value previously dereferenced in org.apache.hadoop.util.RunJar.unJar(File, File, Pattern) At RunJar.java:[line 204]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs-client
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-hdfs-project/hadoop-hdfs
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]

    findbugs :

       module:hadoop-hdfs-project
       Nullcheck of iterator at line 302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:302 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.createSnapshot(InMemoryAliasMap) At InMemoryAliasMap.java:[line 302]
       Nullcheck of iterator at line 138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:138 of value previously dereferenced in org.apache.hadoop.hdfs.server.aliasmap.InMemoryAliasMap.list(Optional) At InMemoryAliasMap.java:[line 138]
       Nullcheck of dirStream at line 621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:621 of value previously dereferenced in org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent() At Storage.java:[line 621]
       Nullcheck of pair at line 623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:623 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper$BlockGroupNonStripedChecksumComputer.checksumBlock(ExtendedBlock, int, Token, DatanodeInfo) At BlockChecksumHelper.java:[line 623]
       Nullcheck of instr at line 1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:1178 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.BlockReceiver.computePartialChunkCrc(long, long) At BlockReceiver.java:[line 1178]
       Redundant nullcheck of oldLock, which is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:is known to be non-null in org.apache.hadoop.hdfs.server.datanode.DataStorage.isPreUpgradableLayout(Storage$StorageDirectory) Redundant null check at DataStorage.java:[line 695]
       Nullcheck of volumes at line 601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:601 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.getVolumeReports() At DirectoryScanner.java:[line 601]
       Nullcheck of volumeReferences at line 214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:214 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.DiskBalancer.getFsVolume(FsDatasetSpi, String) At DiskBalancer.java:[line 214]
       Nullcheck of dataIn at line 1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:1212 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.computeChecksum(ReplicaInfo, File, int, Configuration) At FsDatasetImpl.java:[line 1212]
       Nullcheck of ref at line 243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:243 of value previously dereferenced in org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskAsyncLazyPersistService$ReplicaLazyPersistTask.run() At RamDiskAsyncLazyPersistService.java:[line 243]
       Nullcheck of beforeStream at line 131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:131 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 131]
       Nullcheck of planStream at line 162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:162 of value previously dereferenced in org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(CommandLine) At PlanCommand.java:[line 162]
       Nullcheck of in at line 236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:236 of value previously dereferenced in org.apache.hadoop.hdfs.web.ByteRangeInputStream.read(long, byte[], int, int) At ByteRangeInputStream.java:[line 236]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-client
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:[line 401]
       Redundant nullcheck of resStream, which is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:is known to be non-null in org.apache.hadoop.yarn.service.utils.JsonSerDeser.fromResource(String) Redundant null check at JsonSerDeser.java:[line 123]

    findbugs :

       module:hadoop-yarn-project
       Nullcheck of out at line 536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:536 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.append(AggregatedLogFormat$LogKey, AggregatedLogFormat$LogValue) At AggregatedLogFormat.java:[line 536]
       Nullcheck of out at line 519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:519 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationACLs(Map) At AggregatedLogFormat.java:[line 519]
       Nullcheck of out at line 509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:509 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 509]
       Nullcheck of out at line 512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:512 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeApplicationOwner(String) At AggregatedLogFormat.java:[line 512]
       Nullcheck of out at line 500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:500 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 500]
       Nullcheck of out at line 503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:503 of value previously dereferenced in org.apache.hadoop.yarn.logaggregation.AggregatedLogFormat$LogWriter.writeVersion() At AggregatedLogFormat.java:[line 503]
       Nullcheck of out at line 439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:439 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$LocalWrapperScriptBuilder.writeLocalWrapperScript(Path, Path) At DefaultContainerExecutor.java:[line 439]
       Nullcheck of out at line 510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:510 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor$UnixLocalWrapperScriptBuilder.writeSessionScript(Path, Path) At DefaultContainerExecutor.java:[line 510]
       Nullcheck of it at line 103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:103 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.DeletionService.recover(NMStateStoreService$RecoveredDeletionServiceState) At DeletionService.java:[line 103]
       Nullcheck of rasIterator at line 371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:371 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 371]
       Nullcheck of rcsIterator at line 380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:380 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover() At ContainerManagerImpl.java:[line 380]
       Nullcheck of containerScriptOutStream at line 341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:341 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 341]
       Nullcheck of keystoreOutStream at line 291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:291 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 291]
       Nullcheck of truststoreOutStream at line 309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:309 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call() At ContainerLaunch.java:[line 309]
       Nullcheck of stream at line 182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:182 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.JavaSandboxLinuxContainerRuntime.initializePolicyDir() At JavaSandboxLinuxContainerRuntime.java:[line 182]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 343]
       Redundant nullcheck of it, which is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:is known to be non-null in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverTrackerResources(LocalResourcesTracker, NMStateStoreService$LocalResourceTrackerState) Redundant null check at ResourceLocalizationService.java:[line 356]
       Nullcheck of it at line 307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:307 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService.recoverLocalizedResources(NMStateStoreService$RecoveredLocalizationState) At ResourceLocalizationService.java:[line 307]
       Nullcheck of batch at line 1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:1433 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeAssignedResources(Container, String, List) At NMLeveldbStateStoreService.java:[line 1433]
       Nullcheck of batch at line 464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:464 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.storeContainer(ContainerId, int, long, StartContainerRequest) At NMLeveldbStateStoreService.java:[line 464]
       Nullcheck of it at line 96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:96 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMContainerTokenSecretManager.recover() At NMContainerTokenSecretManager.java:[line 96]
       Nullcheck of it at line 94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:94 of value previously dereferenced in org.apache.hadoop.yarn.server.nodemanager.security.NMTokenSecretManagerInNM.recover() At NMTokenSecretManagerInNM.java:[line 94]
       Nullcheck of batch at line 596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:596 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeApplicationStateInternal(ApplicationStateData) At LeveldbRMStateStore.java:[line 596]
       Nullcheck of batch at line 637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:637 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.removeReservationState(String, String) At LeveldbRMStateStore.java:[line 637]
       Nullcheck of batch at line 655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:655 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeOrUpdateRMDT(RMDelegationTokenIdentifier, Long, boolean) At LeveldbRMStateStore.java:[line 655]
       Nullcheck of batch at line 746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:746 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeProxyCACertState(X509Certificate, PrivateKey) At LeveldbRMStateStore.java:[line 746]
       Nullcheck of batch at line 622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:622 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.recovery.LeveldbRMStateStore.storeReservationState(YarnProtos$ReservationAllocationStateProto, String, String) At LeveldbRMStateStore.java:[line 622]
       Nullcheck of in at line 268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:268 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.getConfigVersion() At FSSchedulerConfigurationStore.java:[line 268]
       Nullcheck of out at line 258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:258 of value previously dereferenced in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FSSchedulerConfigurationStore.writeConfigVersion(long) At FSSchedulerConfigurationStore.java:[line 258]
       Nullcheck of entityIterator at line 176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:176 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.KeyValueBasedTimelineStore.getEntities(String, Long, Long, Long, String, Long, NameValuePair, Collection, EnumSet, TimelineDataManager$CheckAcl) At KeyValueBasedTimelineStore.java:[line 131]
       Nullcheck of iterator at line 1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:1503 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.evictOldStartTimes(long) At RollingLevelDBTimelineStore.java:[line 1503]
       Nullcheck of iterator at line 1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:1733 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomain(String) At RollingLevelDBTimelineStore.java:[line 1733]
       Nullcheck of iterator at line 1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:1742 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getDomains(String) At RollingLevelDBTimelineStore.java:[line 1742]
       Nullcheck of iterator at line 429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:429 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntity(String, String, EnumSet) At RollingLevelDBTimelineStore.java:[line 429]
       Nullcheck of iterator at line 737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:737 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityByTime(byte[], String, Long, Long, Long, String, Long, Collection, EnumSet, TimelineDataManager$CheckAcl, boolean) At RollingLevelDBTimelineStore.java:[line 737]
       Nullcheck of iterator at line 607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:607 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.getEntityTimelines(String, SortedSet, Long, Long, Long, Set) At RollingLevelDBTimelineStore.java:[line 607]
       Nullcheck of domainWriteBatch at line 1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1645 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1645]
       Nullcheck of ownerWriteBatch at line 1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:1646 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.put(TimelineDomain) At RollingLevelDBTimelineStore.java:[line 1646]
       Nullcheck of localFS at line 294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:294 of value previously dereferenced in org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore.serviceInit(Configuration) At RollingLevelDBTimelineStore.java:[line 294]
       Boxed value is unboxed and then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:then immediately reboxed in org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnRWHelper.readResultsWithTimestamps(Result, byte[], byte[], KeyConverter, ValueConverter, boolean) At ColumnRWHelper.java:[line 333]
       Nullcheck of fs at line 75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:75 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.common.HBaseTimelineStorageUtils.getTimelineServiceHBaseConf(Configuration) At HBaseTimelineStorageUtils.java:[line 75]
       Nullcheck of results at line 95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:95 of value previously dereferenced in org.apache.hadoop.yarn.server.timelineservice.storage.reader.EntityTypeReader.readEntityTypes(Configuration, Connection) At EntityTypeReader.java:[line 95]
       Nullcheck of os at line 401 of value previously dereferenced in org.apache.hadoop.yarn.service.provider.ProviderUtils.resolvePropsInConfigFileAndSaveOnHdfs(SliderFileSystem, Map, ComponentInstance, ConfigFile, String, Path) At ProviderUtils.java:401 of value previously dereferenc