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https://issues.apache.org/jira/browse/YARN-4108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15196565#comment-15196565
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Wangda Tan commented on YARN-4108:
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Thanks for reviewing my patch, [~eepayne].
bq. If this behavior is changed, we are all in agreement that this is the best
approach.
Yeah, it is changed, now only queue under its guaranteed resource can preempt
resources from other queue to avoid excessive preemption between two
over-satisfied queues.
Please let me know if you have any other comments on the latest patch (ver.11)
> CapacityScheduler: Improve preemption to preempt only those containers that
> would satisfy the incoming request
> --------------------------------------------------------------------------------------------------------------
>
> Key: YARN-4108
> URL: https://issues.apache.org/jira/browse/YARN-4108
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: capacity scheduler
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Attachments: YARN-4108-design-doc-V3.pdf,
> YARN-4108-design-doc-v1.pdf, YARN-4108-design-doc-v2.pdf, YARN-4108.1.patch,
> YARN-4108.10.patch, YARN-4108.11.patch, YARN-4108.2.patch, YARN-4108.3.patch,
> YARN-4108.4.patch, YARN-4108.5.patch, YARN-4108.6.patch, YARN-4108.7.patch,
> YARN-4108.8.patch, YARN-4108.9.patch, YARN-4108.poc.1.patch,
> YARN-4108.poc.2-WIP.patch, YARN-4108.poc.3-WIP.patch,
> YARN-4108.poc.4-WIP.patch
>
>
> This is sibling JIRA for YARN-2154. We should make sure container preemption
> is more effective.
> *Requirements:*:
> 1) Can handle case of user-limit preemption
> 2) Can handle case of resource placement requirements, such as: hard-locality
> (I only want to use rack-1) / node-constraints (YARN-3409) / black-list (I
> don't want to use rack1 and host\[1-3\])
> 3) Can handle preemption within a queue: cross user preemption (YARN-2113),
> cross applicaiton preemption (such as priority-based (YARN-1963) /
> fairness-based (YARN-3319)).
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