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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:
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Attachment: YARN-10617.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.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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