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https://issues.apache.org/jira/browse/YARN-6619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16328195#comment-16328195
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Arun Suresh commented on YARN-6619:
-----------------------------------

Update the patch (v003) based on [~kkaranasos]'s and [~leftnoteasy]'s 
suggestions.
* Removed the {{addPlacementConstratint}} method and included it as an optional 
parameter in the register call.
* as per wangda's suggestion, am now just updating the numAllocations instead 
of adding.
* moved the scheduler matching check to a separate function - and removed the 
resource sizing equality check

bq. If there are no tags, do we still associate a constraint with an empty tag?
If there are no tags in the scheduling request, then the scheduler should 
expect a Placement Constraint, which applies to that specific scheduling 
request - that check I guess is done in YARN-6599

> AMRMClient Changes to use the PlacementConstraint and SchcedulingRequest 
> objects
> --------------------------------------------------------------------------------
>
>                 Key: YARN-6619
>                 URL: https://issues.apache.org/jira/browse/YARN-6619
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>            Priority: Major
>         Attachments: YARN-6619-YARN-6592.001.patch, 
> YARN-6619-YARN-6592.002.patch, YARN-6619-YARN-6592.003.patch
>
>
> Opening this JIRA to track changes needed in the AMRMClient to incorporate 
> the PlacementConstraint and SchedulingRequest objects



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