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https://issues.apache.org/jira/browse/YARN-10935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419340#comment-17419340
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Eric Badger commented on YARN-10935:
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Also thanks to [~ahussein] for the additional review!
> AM Total Queue Limit goes below per-user AM Limit if parent is full.
> --------------------------------------------------------------------
>
> Key: YARN-10935
> URL: https://issues.apache.org/jira/browse/YARN-10935
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacity scheduler, capacityscheduler
> Reporter: Eric Payne
> Assignee: Eric Payne
> Priority: Major
> Fix For: 3.4.0, 2.10.2, 3.3.2, 3.2.4, 3.1.5
>
> Attachments: Screen Shot 2021-09-07 at 12.49.52 PM.png, Screen Shot
> 2021-09-07 at 12.55.37 PM.png, YARN-10935.001.patch, YARN-10935.002.patch,
> YARN-10935.003.patch, YARN-10935.branch-2.10.003.patch,
> YARN-10935.branch-3.2.003.patch
>
>
> This happens when DRF is enabled and all of one resource is consumed but the
> second resources still has plenty available.
> This is reproduceable by setting up a parent queue where the capacity and max
> capacity are the same, with 2 or more sub-queues whose max capacity is 100%.
> In one of the sub-queues, start a long-running app that consumes all
> resources in the parent queue's hieararchy. This app will consume all of the
> memory but not vary many vcores (for example)
> In a second queue, submit an app. The *{{Max Application Master Resources Per
> User}}* limit is much more than the *{{Max Application Master Resources}}*
> limit.
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