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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (YARN-685) Capacity Scheduler is not distributing the reducers tasks across the cluster
Date Thu, 02 Apr 2015 23:34:55 GMT

     [ https://issues.apache.org/jira/browse/YARN-685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wangda Tan resolved YARN-685.
-----------------------------
    Resolution: Invalid

According to test result from [~raviprak], CS fairly distributes reducers to NMs in the cluster.
Resolving this as invalid and please reopen this if you still think this is a problem.


> Capacity Scheduler is not distributing the reducers tasks across the cluster
> ----------------------------------------------------------------------------
>
>                 Key: YARN-685
>                 URL: https://issues.apache.org/jira/browse/YARN-685
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.0.4-alpha
>            Reporter: Devaraj K
>
> If we have reducers whose total memory required to complete is less than the total cluster
memory, it is not assigning the reducers to all the nodes uniformly(~uniformly). Also at that
time there are no other jobs or job tasks running in the cluster.



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