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https://issues.apache.org/jira/browse/YARN-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13665433#comment-13665433
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Sandy Ryza commented on YARN-392:
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bq. Can anyRequest be null. Others are checked for null but this one isn't.
In the contexts that the method is called, it can't be null, but I'll add in a
check to be defensive.
Will fix the comments as well.
Based on Arun's April 4th comment, my understanding was that capacity scheduler
work would be done in YARN-398.
> 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.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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