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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2889) Limit in the number of opportunistic container requests per AM
Date Wed, 29 Nov 2017 05:18:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-2889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16270155#comment-16270155
] 

Weiwei Yang commented on YARN-2889:
-----------------------------------

I would like to understand the use case of such limit. We might consider to let our low priority
jobs to run just opportunistic containers, so most of time, jobs only schedule either guaranteed
containers or opportunistic containers, valid case?  If such limit is enforced, our case might
not work.

> Limit in the number of opportunistic container requests per AM
> --------------------------------------------------------------
>
>                 Key: YARN-2889
>                 URL: https://issues.apache.org/jira/browse/YARN-2889
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Konstantinos Karanasos
>            Assignee: Arun Suresh
>
> We introduce a way to limit the number of queueable requests that each AM can submit
to the LocalRM.
> This way we can restrict the number of queueable containers handed out by the system,
as well as throttle down misbehaving AMs (asking for too many queueable containers).



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