MR-279: Need to retrieve shuffle port number on AplicationMaster restart
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Key: MAPREDUCE-2666
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2666
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Affects Versions: 0.23.0
Reporter: Robert Joseph Evans
Assignee: Robert Joseph Evans
Fix For: 0.23.0
MAPREDUCE-2652 allows ShuffleHandler to return the port it is operating on. In
the case of an ApplicationMaster crash where it needs to be restarted that
information is lost. We either need to re-query it from each of the
NodeManagers or to persist it to the JobHistory logs and retrieve it again.
The job history logs is probably the simpler solution.
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