Steve Loughran created YARN-4937:
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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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