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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4945) [Umbrella] Capacity Scheduler Preemption Within a queue
Date Mon, 25 Jul 2016 16:58:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-4945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15392286#comment-15392286

Sunil G commented on YARN-4945:

Thanks [~eepayne]

bq.I would like to separate out the sub-feature pieces of in-queue preemption as much as possible.
bq.  I think that in-queue preemption based on user limit needs to be very dependent on app
priority and vice-versa. 
Yes. I have almost completed poc code for *ideal resource allocation* within a queue. This
is considering priority of apps alone. Yes, we have to have user-limit etc. As we progress,
we can add that to strengthen the intra-queue preemption for more accurate results.

I could share draft POC patch, but I thought its better if I share the doc first. I will share
it in a day. we could have more discussion to finalize the same. POC patch was done to see
how well we can reuse and fit OR make use of the changes done by [~leftnoteasy] for a better
preemption framework. 

> [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
> This is umbrella ticket to track efforts of preemption within a queue to support features
> YARN-2009. YARN-2113. YARN-4781.

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