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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4945) [Umbrella] Capacity Scheduler Preemption Within a queue
Date Tue, 23 Aug 2016 14:58:22 GMT

    [ https://issues.apache.org/jira/browse/YARN-4945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432961#comment-15432961
] 

Sunil G commented on YARN-4945:
-------------------------------

Thank you [~eepayne] for the detailed explanation.
bq.I want to make sure we are talking about the same thing, so I would like to expressly clarify
what I mean by user-limit
Thanks for the details here. It makes much sense now. With minimum-user-limit-percent, we
are just trying to ensure a minimum percentage of resource for all users. I think, we need
not having to worry about user level headroom here then. It becomes more clear and simple
now.

bq.I think it would be helpful to define use cases so that everyone is clear about what problems
we are trying to solve. I will make an attempt at that and post a doc here.
Perfect. 

I will soon upload a cleaner version patch with basic UT.

> [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: IntraQueuepreemption-CapacityScheduler (Design).pdf, 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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