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https://issues.apache.org/jira/browse/YARN-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16320959#comment-16320959
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Arun Suresh commented on YARN-6599:
-----------------------------------

{noformat}
Since the whole scheduling request is a new feature, we will include two 
configs:
a. Enable placement processor (YARN-7612 already includes configs)
b. Enable scheduling request handled by app placement allocator.

Both a/b are disabled by default and cannot be enabled at the same time.
{noformat}
Also, as stated above, will you be adding the new config param - and the check 
in this patch ?

> 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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