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https://issues.apache.org/jira/browse/YARN-8505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16539550#comment-16539550
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Bibin A Chundatt commented on YARN-8505:
----------------------------------------

[~Tao Yang]

Thank you for clarification

{{numPendingApps+numActiveApps}} --> *Submitted application to queue*.  So 
limitation will be only for submission of application to queue not for 
application *RUNNING application* (application in running state who AM has 
started running). 

Earlier we would have been able to limit RUNNING application based on AM LIMIT 
for unmanaged AM. 

So this will be a behaviour changed from old version too.

> AMLimit and userAMLimit check should be skipped for unmanaged AM
> ----------------------------------------------------------------
>
>                 Key: YARN-8505
>                 URL: https://issues.apache.org/jira/browse/YARN-8505
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 3.2.0, 2.9.2
>            Reporter: Tao Yang
>            Assignee: Tao Yang
>            Priority: Major
>         Attachments: YARN-8505.001.patch
>
>
> AMLimit and userAMLimit check in LeafQueue#activateApplications should be 
> skipped for unmanaged AM whose resource is not taken from YARN cluster.



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