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https://issues.apache.org/jira/browse/YARN-4937?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved YARN-4937.
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Resolution: Cannot Reproduce
not in branch-2
> EntityGroupFSTimelineStore to close cached leveldb instances in serviceStop()
> -----------------------------------------------------------------------------
>
> Key: YARN-4937
> URL: https://issues.apache.org/jira/browse/YARN-4937
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: 2.8.0
> Environment: JUnit test runs with
> Reporter: Steve Loughran
>
> When I enable ATS1.5 and non-summary data, all my JUnit test runs with it
> fail pass if called individually. But if executed together, the 2nd+ service
> fails, key exception text is
> {code}
> org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: lock
> /Users/stevel/Projects/spark/yarn-timeline/yarn-timeline-history/target/tmp/integration/leveldb/timelineEntityGroupId_1111_0_application_1111_0000-timeline-cache.ldb/LOCK:
> already held by process
> {code}
> I believe the problem is that {{EntityGroupFSTimelineStore.cachedLogs}} isn't
> cleaning up its logs in {{serviceStop()}}, and as my tests use the same
> directory and appIds in its test runs, the next attempt to create a cache
> item fails.
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