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https://issues.apache.org/jira/browse/MAPREDUCE-3353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hitesh Shah updated MAPREDUCE-3353:
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Priority: Critical (was: Major)
> Need a RM->AM channel to inform AMs about faulty/unhealthy/lost nodes
> ---------------------------------------------------------------------
>
> 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
> Priority: Critical
> 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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