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https://issues.apache.org/jira/browse/YARN-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16314934#comment-16314934
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Konstantinos Karanasos commented on YARN-6599:
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bq. different implementations can choose to support subset of the 
SchedulingRequest, but we should not change semantics of the API unless 
discussed
Fair point. Let's discuss to see what is the right balance between usability 
and complicating the code for the first version.

bq. Filed YARN-7709 for this.
bq. but let's discuss before taking action on this. I need to think a bit more 
about it – it might not be just syntactic sugar given we have decided to not 
include the source tags in the constraint itself.

> Support rich placement constraints in scheduler
> -----------------------------------------------
>
>                 Key: YARN-6599
>                 URL: https://issues.apache.org/jira/browse/YARN-6599
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>         Attachments: YARN-6599-YARN-6592.003.patch, 
> YARN-6599-YARN-6592.004.patch, YARN-6599-YARN-6592.005.patch, 
> YARN-6599-YARN-6592.006.patch, YARN-6599-YARN-6592.007.patch, 
> YARN-6599-YARN-6592.008.patch, YARN-6599-YARN-6592.wip.002.patch, 
> YARN-6599.poc.001.patch
>
>




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