Naresh P R created HIVE-23409:
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Summary: 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
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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