ResourceManager should not kill apps that are well behaved
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Key: MAPREDUCE-4157
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4157
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: mrv2
Affects Versions: 0.23.3
Reporter: Jason Lowe
Assignee: Jason Lowe
Currently when the ApplicationMaster unregisters with the ResourceManager, the
RM kills (via the NMs) all the active containers for an application. This
introduces a race where the AM may be trying to clean up and may not finish
before it is killed. The RM should give the AM a chance to exit cleanly on its
own rather than always race with a pending kill on shutdown.
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