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https://issues.apache.org/jira/browse/YARN-4003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15061563#comment-15061563
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Carlo Curino commented on YARN-4003:
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[~Sunil G], I think your understanding is correct. The point is that the AM
percent limits for a PlanQueue are mostly clashing with the highly dynamic
nature of sub-queues being created/resized/destroyed dynamically. In our
experiments it was never useful, but sometimes it prevented jobs to start. I
don't think the proposed patch is perfect (for the reasons you pointed out),
but at least it allows jobs to go through. Do you have in mind any more
principled way to set this?
> ReservationQueue inherit getAMResourceLimit() from LeafQueue, but behavior is
> not consistent
> --------------------------------------------------------------------------------------------
>
> Key: YARN-4003
> URL: https://issues.apache.org/jira/browse/YARN-4003
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Carlo Curino
> Assignee: Carlo Curino
> Attachments: YARN-4003.patch
>
>
> The inherited behavior from LeafQueue (limit AM % based on capacity) is not a
> good fit for ReservationQueue (that have highly dynamic capacity).
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