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https://issues.apache.org/jira/browse/MAPREDUCE-3572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy updated MAPREDUCE-3572:
-------------------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
I just committed this. Thanks Vinod!
> MR AM's dispatcher is blocked by heartbeats to ResourceManager
> --------------------------------------------------------------
>
> Key: MAPREDUCE-3572
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3572
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mr-am, mrv2, performance
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3572-20111215.txt, MAPREDUCE-3572-20120104.txt
>
>
> All the heartbeat processing is done in {{RMContainerAllocator}} locking the
> object. The event processing is also locked on this, causing the dispatcher
> to be blocked and the rest of the AM getting stalled.
> The event processing should be in a separate thread.
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