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https://issues.apache.org/jira/browse/YARN-9930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16967164#comment-16967164
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zhoukang commented on YARN-9930:
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 [~pbacsko][~epayne]Thanks, yes , you are right
bq. zhoukang, can you please clarify the use case? If I understand correctly, 
you are saying that the pending application should not be rejected even if the 
number of running apps is over the max threshold?

When we migrate from FS  to CS, this difference will make users be confused.

> Support max running app logic for CapacityScheduler
> ---------------------------------------------------
>
>                 Key: YARN-9930
>                 URL: https://issues.apache.org/jira/browse/YARN-9930
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacity scheduler, capacityscheduler
>    Affects Versions: 3.1.0, 3.1.1
>            Reporter: zhoukang
>            Assignee: zhoukang
>            Priority: Major
>
> In FairScheduler, there has limitation for max running which will let 
> application pending.
> But in CapacityScheduler there has no feature like max running app.Only got 
> max app,and jobs will be rejected directly on client.
> This jira i want to implement this semantic for CapacityScheduler.



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