MR 279: race in JobHistoryEventHandler stop
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Key: MAPREDUCE-2504
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2504
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Reporter: Siddharth Seth
Assignee: Siddharth Seth
Fix For: 0.23.0
The condition to stop the eventHandling thread currently requires it to be
'stopped' AND interrupted. If an interrupt arrives after a take, but before
handleEvent is called - the interrupt status ends up being handled by
hadoop.util.Shell.runCommand() - which ignores it (and in the process resets
the flag).
The eventHandling thread subsequently hangs on eventQueue.take()
This currently randomly fails unit tests - and can hang MR AMs.
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