Need a RM->AM channel to inform AMs about faulty/unhealthy/lost nodes
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Key: MAPREDUCE-3353
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3353
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: applicationmaster, mrv2, resourcemanager
Affects Versions: 0.23.0
Reporter: Vinod Kumar Vavilapalli
Fix For: 0.23.1
When a node gets lost or turns faulty, AM needs to know about that event so
that it can take some action like for e.g. re-executing map tasks whose
intermediate output live on that faulty node.
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