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https://issues.apache.org/jira/browse/YARN-10617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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VADAGA ANANYO RAO updated YARN-10617:
-------------------------------------
    Attachment: YARN-10617.0001.patch

> Fifo and Fair intra-queue preemption goes on indefinitely when apps are in 
> pending state due to max AM limit reached
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-10617
>                 URL: https://issues.apache.org/jira/browse/YARN-10617
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacity scheduler
>    Affects Versions: 3.1.1
>            Reporter: VADAGA ANANYO RAO
>            Assignee: VADAGA ANANYO RAO
>            Priority: Major
>         Attachments: YARN-10617.0001.patch
>
>
> This case occurs when:
> 1. an application gets submitted in a cluster running at max-AM limit.
> 2. The new job requests AM resource. So it has 1 pending request.
> 3. To fulfil this request, the preemption logic preempts 1 resource from a 
> running app.
> 4. Because the cluster is at max-AM limit, the scheduler re-assigns the 
> preempted container back to the running app.



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