Jason Lowe created MAPREDUCE-5888:
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Summary: Failed job leaves hung AM after it unregisters
Key: MAPREDUCE-5888
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5888
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mr-am
Affects Versions: 2.2.0
Reporter: Jason Lowe
Assignee: Jason Lowe
When a job fails the AM hangs during shutdown. A non-daemon thread pool
executor thread prevents the JVM teardown from completing, and the AM lingers
on the cluster for the AM expiry interval in the FINISHING state until
eventually the RM expires it and kills the container. If application limits on
the queue are relatively low (e.g.: small queue or small cluster) this can
cause unnecessary delays in resource scheduling on the cluster.
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