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https://issues.apache.org/jira/browse/YARN-4945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15456717#comment-15456717
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Wangda Tan commented on YARN-4945:
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bq. I think we do need several intra-queue configs that are separate from the
existing (inter-queue) ones. For inter-queue vs. intra-queue, I think we need a
separate one at least for total_preemption_per_round and
max_ignored_over_capacity, and maybe even for natural_termination_factor and
max_wait_before_kill.
We definitely need some parameter for per-queue preemption setting, max-to-have
in my mind is:
- Minimum queue's used capacity to trigger preemption
- Total preemption per round
- Max ignored over capacity (for user limit)
I suggest to add only must-to-have parameters, more options make a feature
harder to be used. So I would prefer to not add things like
natural-termination-factor / max-wait-before-kill for now.
> [Umbrella] Capacity Scheduler Preemption Within a queue
> -------------------------------------------------------
>
> Key: YARN-4945
> URL: https://issues.apache.org/jira/browse/YARN-4945
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Wangda Tan
> Attachments: Intra-Queue Preemption Use Cases.pdf,
> IntraQueuepreemption-CapacityScheduler (Design).pdf, YARN-2009-wip.2.patch,
> YARN-2009-wip.patch
>
>
> This is umbrella ticket to track efforts of preemption within a queue to
> support features like:
> YARN-2009. YARN-2113. YARN-4781.
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