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https://issues.apache.org/jira/browse/HIVE-20192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sankar Hariappan reassigned HIVE-20192:
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> HS2 is leaking JDOPersistenceManager objects.
> ---------------------------------------------
>
> Key: HIVE-20192
> URL: https://issues.apache.org/jira/browse/HIVE-20192
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Affects Versions: 3.0.0, 3.1.0
> Reporter: Sankar Hariappan
> Assignee: Sankar Hariappan
> Priority: Major
> Labels: HiveServer2
>
> Hiveserver2 instances where every 3-4 days they are observing HS2 in an
> unresponsive state, we observed that the FGC collection happening regularly
> From JXray report it is seen that pmCache(List of JDOPersistenceManager
> objects) is occupying 84% of the heap and there are around 16,000 references
> of UDFClassLoader.
> When the RawStore object is re-created, it is not allowed to be updated into
> the ThreadWithGarbageCleanup.threadRawStoreMap which leads to the new
> RawStore never gets cleaned-up when the thread exit.
>
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