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https://issues.apache.org/jira/browse/YARN-2009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15550216#comment-15550216
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Eric Payne commented on YARN-2009:
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Thanks, [~sunilg], for the new patch. Preemption for the purposes of preventing
priority inversion seems to work now without unneeded preemption.
However, in this new patch, user-limit-percent preemption doesn't seem to be
working. If:
# {{user1}} starts {{app1}} at {{priority1}} on {{Queue1}} and consumes the
entire queue
# {{user2}} starts {{app2}} at {{priority1}} on {{Queue1}}
preemption does not happen.
I will continue to investigate, but I thought I would let you know.
> Priority support for preemption in ProportionalCapacityPreemptionPolicy
> -----------------------------------------------------------------------
>
> Key: YARN-2009
> URL: https://issues.apache.org/jira/browse/YARN-2009
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacityscheduler
> Reporter: Devaraj K
> Assignee: Sunil G
> Attachments: YARN-2009.0001.patch, YARN-2009.0002.patch,
> YARN-2009.0003.patch, YARN-2009.0004.patch, YARN-2009.0005.patch
>
>
> While preempting containers based on the queue ideal assignment, we may need
> to consider preempting the low priority application containers first.
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