[jira] [Commented] (SOLR-13392) Unable to start prometheus-exporter in 7x branch

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[jira] [Commented] (SOLR-13392) Unable to start prometheus-exporter in 7x branch

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/SOLR-13392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16819716#comment-16819716 ]

Shalin Shekhar Mangar commented on SOLR-13392:
----------------------------------------------

Ok I can reproduce this easily. For some reason, our ivy and build.xml configurations add lucene-core as a dependency (perhaps transitively) to the prometheus-exporter contrib. But the runtime does not include that jar. I'll try to see if I can get the builds to fail because of this dependency and fix that first and then remove the lucene dependency from prometheus as it does not need it.

> Unable to start prometheus-exporter in 7x branch
> ------------------------------------------------
>
>                 Key: SOLR-13392
>                 URL: https://issues.apache.org/jira/browse/SOLR-13392
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public)
>          Components: metrics
>    Affects Versions: 7.7.2
>            Reporter: Karl Stoney
>            Assignee: Shalin Shekhar Mangar
>            Priority: Major
>
> Hi,
> prometheus-exporter doesn't start in branch 7x on commit 7dfe1c093b65f77407c2df4c2a1120a213aef166, it does work on 26b498d0a9d25626a15e25b0cf97c8339114263a so something has changed between those two commits causing this.
> I am presuming it is https://github.com/apache/lucene-solr/commit/e1eeafb5dc077976646b06f4cba4d77534963fa9#diff-3f7b27f0f087632739effa2aa508d77eR34
> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/lucene/util/IOUtils
>         at org.apache.solr.core.SolrResourceLoader.close(SolrResourceLoader.java:881)
>         at org.apache.solr.prometheus.exporter.SolrExporter.loadMetricsConfiguration(SolrExporter.java:221)
>         at org.apache.solr.prometheus.exporter.SolrExporter.main(SolrExporter.java:205)
> Caused by: java.lang.ClassNotFoundException: org.apache.lucene.util.IOUtils
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>         ... 3 more



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