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https://issues.apache.org/jira/browse/YARN-9277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16766890#comment-16766890
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Zhaohui Xin commented on YARN-9277:
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Hi, [~Steven Rand], thanks for your reply.
If one long-running task is preempted, It's next attempt will run long time
similarly. If this attempt is also be preempted, this job will be difficult to
finish.
Also, I think it's not reasonable to limit long-running apps in specific
queues, which is not generic. Maybe we have a better solution?
> Add more restrictions In FairScheduler Preemption
> --------------------------------------------------
>
> Key: YARN-9277
> URL: https://issues.apache.org/jira/browse/YARN-9277
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Reporter: Zhaohui Xin
> Assignee: Zhaohui Xin
> Priority: Major
> Attachments: YARN-9277.001.patch, YARN-9277.002.patch
>
>
>
> I think we should add more restrictions in fair scheduler preemption.
> * We should not preempt self
> * We should not preempt high priority job
> * We should not preempt container which has been running for a long time.
> * ...
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