Sergey Shelukhin created HIVE-18078:
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Summary: WM getSession needs some retry logic
Key: HIVE-18078
URL: https://issues.apache.org/jira/browse/HIVE-18078
Project: Hive
Issue Type: Sub-task
Reporter: Sergey Shelukhin
When we get a bad session (e.g. no registry info because AM has gone
catatonic), the failure by the timeout future fails the getSession call.
The retry model in TezTask is that it would get a session (which in original
model can be completely unusable, but we still get the object), and then retry
(reopen) if it's a lemon. If the reopen fails, we fail.
getSession is not covered by this retry scheme, and should thus do its own
retries (or the retry logic needs to be changed)
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