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https://issues.apache.org/jira/browse/MAPREDUCE-4797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated MAPREDUCE-4797:
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Attachment: MAPREDUCE-4797.patch
Patch to fix the try block in the heartbeat method so we catch the exceptions
being thrown when trying to contact the RM and can handle them for retry logic
properly.
> LocalContainerAllocator can loop forever trying to contact the RM
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-4797
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4797
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster
> Affects Versions: 0.23.3, 2.0.1-alpha
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: MAPREDUCE-4797.patch
>
>
> If LocalContainerAllocator has trouble communicating with the RM it can end
> up retrying forever if the nature of the error is not a YarnException.
> This can be particulary bad if the connection went down because the cluster
> was reset such that the RM and NM have lost track of the process and
> therefore nothing else will eventually kill the process. In this scenario,
> the looping AM continues to pelt the RM with connection requests every second
> using a stale token, and the RM logs the SASL exceptions over and over.
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