[jira] [Commented] (NUTCH-2375) Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce

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[jira] [Commented] (NUTCH-2375) Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/NUTCH-2375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16079396#comment-16079396 ]

ASF GitHub Bot commented on NUTCH-2375:
---------------------------------------

lewismc commented on issue #188: NUTCH-2375 Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce
URL: https://github.com/apache/nutch/pull/188#issuecomment-313890439
 
 
   @Omkar20895 start with ```TestSegmentMergerCrawlDatums.java```, the primary issue is as follows
   ```
   2017-07-08 17:27:43,515 WARN  mapred.LocalJobRunner (LocalJobRunner.java:run(560)) - job_local1442546213_0007
   java.lang.Exception: java.lang.ClassCastException: org.apache.nutch.crawl.CrawlDatum cannot be cast to org.apache.nutch.metadata.MetaWrapper
    at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)
    at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:522)
   Caused by: java.lang.ClassCastException: org.apache.nutch.crawl.CrawlDatum cannot be cast to org.apache.nutch.metadata.MetaWrapper
    at org.apache.nutch.segment.SegmentMerger$SegmentMergerMapper.map(SegmentMerger.java:397)
    at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:243)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
   ```
 
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> Upgrade the code base from org.apache.hadoop.mapred to org.apache.hadoop.mapreduce
> ----------------------------------------------------------------------------------
>
>                 Key: NUTCH-2375
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2375
>             Project: Nutch
>          Issue Type: Improvement
>          Components: deployment
>            Reporter: Omkar Reddy
>
> Nutch is still using the deprecated org.apache.hadoop.mapred dependency which has been deprecated. It need to be updated to org.apache.hadoop.mapreduce dependency.



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