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From "Sankar Hariappan (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-20192) HS2 is leaking JDOPersistenceManager objects.
Date Tue, 17 Jul 2018 09:41:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-20192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sankar Hariappan reassigned HIVE-20192:
---------------------------------------


> 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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