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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4685) AM blacklist addition/removal should get updated for every allocate call from RMAppAttemptImpl.
Date Wed, 10 Feb 2016 05:27:18 GMT
Rohith Sharma K S created YARN-4685:
---------------------------------------

             Summary: AM blacklist addition/removal should get updated for every allocate
call from RMAppAttemptImpl.
                 Key: YARN-4685
                 URL: https://issues.apache.org/jira/browse/YARN-4685
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
    Affects Versions: 2.8.0
            Reporter: Rohith Sharma K S
            Assignee: Rohith Sharma K S
            Priority: Blocker


AM blacklist addition or removal is updated only when RMAppAttempt is scheduled i.e {{RMAppAttemptImpl#ScheduleTransition#transition}}.
But once attempt is scheduled if there is any removeNode/addNode in cluster then this is not
updated to {{BlackListManager#refreshNodeHostCount}}. This leads BlackListManager to operate
on stale NM's count. And application is in ACCEPTED state and wait forever even if we add
more nodes to cluster.

*Solution* is update BlacklistManager for every {{RMAppAttemptImpl#AMContainerAllocatedTransition#transition}}
call. This ensures if there is any addition/removal in nodes, this will be updated to BlacklistManager




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