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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4685) AM blacklisting result in application to get hanged
Date Wed, 10 Feb 2016 09:53:18 GMT

     [ https://issues.apache.org/jira/browse/YARN-4685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Rohith Sharma K S updated YARN-4685:
    Summary: AM blacklisting result in application to get hanged  (was: AM blacklist addition/removal
should get updated for every allocate call from RMAppAttemptImpl.)

> AM blacklisting result in application to get hanged
> ---------------------------------------------------
>                 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
> 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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