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https://issues.apache.org/jira/browse/YARN-4108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15060881#comment-15060881
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Wangda Tan commented on YARN-4108:
----------------------------------

Thanks [~curino] for comments!

I think all your suggestions/concerns are make sense to me.

I'm thinking if it is possible to find a way to combine the two approach 
(normal and surgical) together which is suggested by [~chris.douglas]. I feel 
combination of the two approach could solve all your concerns. Will keep you 
updated.

> 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: Bug
>          Components: capacity scheduler
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>         Attachments: YARN-4108-design-doc-v1.pdf, 
> YARN-4108-design-doc-v2.pdf, YARN-4108.poc.1.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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