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https://issues.apache.org/jira/browse/YARN-5293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15357871#comment-15357871
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Jonathan Hung commented on YARN-5293:
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[~sunilg] and [~leftnoteasy], thanks for the clarifications. I think these make
sense.
One concern I have is regarding when label exclusivity is disabled. If I
understand correctly,
[YARN-2498|https://issues.apache.org/jira/browse/YARN-2498] keeps track of the
containers which ignore partition exclusivity. So if we disable preemption for
a queue-label, we can still preempt the containers with NO_LABEL running on a
partition. That way specifying preemption disabled for a queue-label only
disables preemption for containers with that label so we can avoid the scenario
of indirectly disabling preemption for NO_LABEL containers on non-default
partitions.
> Disable preemption per queue per partition
> ------------------------------------------
>
> Key: YARN-5293
> URL: https://issues.apache.org/jira/browse/YARN-5293
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacityscheduler
> Reporter: Jonathan Hung
>
> [YARN-2056|https://issues.apache.org/jira/browse/YARN-2056] added support for
> disabling preemption at queue level.
> [YARN-2498|https://issues.apache.org/jira/browse/YARN-2498] added support for
> per partition preemption. It would be useful to be able to disable preemption
> per partition per queue, so that if a queue Q has access to two labels A and
> B, we can disable preemption for Q in A but not in B.
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