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https://issues.apache.org/jira/browse/YARN-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13665465#comment-13665465
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Sandy Ryza commented on YARN-392:
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Uploaded a patch that addresses Bikas's latest comments.
> Make it possible to specify hard locality constraints in resource requests
> --------------------------------------------------------------------------
>
> 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-392-2.patch, YARN-392-2.patch,
> YARN-392-2.patch, YARN-392-3.patch, YARN-392-4.patch, YARN-392-5.patch,
> YARN-392-6.patch, YARN-392-7.patch, YARN-392-8.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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