Sankar Hariappan created HIVE-20192:
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Summary: 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
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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