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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4937) EntityGroupFSTimelineStore to close cached leveldb instances in serviceStop()
Date Sat, 09 Apr 2016 11:58:25 GMT
Steve Loughran created YARN-4937:
------------------------------------

             Summary: 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
    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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