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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7017) Enable preemption for a single queue.
Date Tue, 15 Aug 2017 19:56:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16127774#comment-16127774
] 

Eric Payne commented on YARN-7017:
----------------------------------

Thanks [~saruntek] for raising this issue.

{quote}
As of today the only way to enable preemption at a queue level is:
- Enable cluster level preemption
- Disable preemption on the queues where not required using yarn.scheduler.capacity.<queue-path>.disable_preemption
to true

{quote}
Actually, you don't need to {{disable_preemption}} for every queue. The {{disable_preemption}}
property is inherited, so you can:
- Enable cluster level preemption
- Disable preemption on the root queue using {{yarn.scheduler.capacity.root.disable_preemption
= true}}
- Enable preemption on the queues where required using {{yarn.scheduler.capacity.<queue-path>.disable_preemption
= true}}

> Enable preemption for a single queue.
> -------------------------------------
>
>                 Key: YARN-7017
>                 URL: https://issues.apache.org/jira/browse/YARN-7017
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: capacity scheduler, yarn
>            Reporter: sarun
>
> *PROBLEM*
> How to enable preemption on a single queue in a cluster?
> *DESCRIPTION*
> As of today the only way to enable preemption at a queue level is:
> * Enable cluster level preemption
> * Disable preemption on the queues where not required using yarn.scheduler.capacity.<queue-path>.disable_preemption
to true
> Can we have some sort of a parameter like 
> *_yarn.scheduler.capacity.<queue-path>.enable_preemption_*
> which would just enable preemption per queue instead of going the other way round which
is more time consuming and error prone.



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