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https://issues.apache.org/jira/browse/HIVE-23409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Naresh P R updated HIVE-23409:
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Status: Patch Available (was: In Progress)
> If TezSession application reopen fails for Timeline service down, default
> TezSession from SessionPool is closed after a retry
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-23409
> URL: https://issues.apache.org/jira/browse/HIVE-23409
> Project: Hive
> Issue Type: Bug
> Reporter: Naresh P R
> Assignee: Naresh P R
> Priority: Major
> Attachments: HIVE-23409.patch
>
>
> we are closing a default session from TezSessionPool at here.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/TezTask.java#L589]
> If all the sessions in a pool are destroyed, queries wait indefinitely at
> TezSessionPool.getSession until HS2 restarts after other service recoveries.
> [HiveServer2-Background-Pool: Thread-12345]: tez.TezSessionPoolManager (:())
> - We are closing a default session because of retry failure.
> It's better if we allow retry & fail than hung.
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