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https://issues.apache.org/jira/browse/YARN-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619778#comment-13619778
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Thomas Graves commented on YARN-392:
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Bikas when you say creating an API for blacklisting a set of nodes are you 
basically referring to YARN-398 or something else?
                
> Make it possible to schedule to specific nodes without dropping locality
> ------------------------------------------------------------------------
>
>                 Key: YARN-392
>                 URL: https://issues.apache.org/jira/browse/YARN-392
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>            Assignee: Sandy Ryza
>         Attachments: YARN-392-1.patch, YARN-392.patch
>
>
> Currently its not possible to specify scheduling requests for specific nodes 
> and nowhere else. The RM automatically relaxes locality to rack and * and 
> assigns non-specified machines to the app.

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