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From "Zian Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8509) Fix UserLimit calculation for preemption to balance scenario after queue satisfied
Date Thu, 26 Jul 2018 21:51:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16558936#comment-16558936
] 

Zian Chen commented on YARN-8509:
---------------------------------

Update patch fixing failed UTs.

> Fix UserLimit calculation for preemption to balance scenario after queue satisfied  
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-8509
>                 URL: https://issues.apache.org/jira/browse/YARN-8509
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>            Reporter: Zian Chen
>            Assignee: Zian Chen
>            Priority: Major
>         Attachments: YARN-8509.001.patch, YARN-8509.002.patch
>
>
> In LeafQueue#getTotalPendingResourcesConsideringUserLimit, we calculate total pending
resource based on user-limit percent and user-limit factor which will cap pending resource
for each user to the minimum of user-limit pending and actual pending. This will prevent
queue from taking more pending resource to achieve queue balance after all queue satisfied
with its ideal allocation.
>   
>  We need to change the logic to let queue pending can go beyond userlimit.



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