Jiandan Yang  commented on YARN-8007:

Because currently MR specify placement constraints in the form of data 
locality, there is no need to specify placement constraint in MR job. I plan to 
implement specifying placement constraints in *stream type* app in SLS  
introduced by YARN-7732.
[~cheersyang] [~leftnoteasy] Please feel free to share your opinions, thanks!

> Support specifying placement constraint for task containers in SLS
> ------------------------------------------------------------------
>                 Key: YARN-8007
>                 URL: https://issues.apache.org/jira/browse/YARN-8007
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: scheduler-load-simulator
>            Reporter: Jiandan Yang 
>            Assignee: Jiandan Yang 
>            Priority: Major
> YARN-6592 introduces placement constraint. Currently SLS does not support 
> specify placement constraint. 
> In order to help better perf test, we should be able to support specify 
> placement for containers in sls configuration.

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