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https://issues.apache.org/jira/browse/YARN-6194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15879499#comment-15879499
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Karthik Kambatla commented on YARN-6194:
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+1, checking this in. 

> Cluster capacity in SchedulingPolicy is updated only on allocation file reload
> ------------------------------------------------------------------------------
>
>                 Key: YARN-6194
>                 URL: https://issues.apache.org/jira/browse/YARN-6194
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler
>    Affects Versions: 2.8.0
>            Reporter: Karthik Kambatla
>            Assignee: Yufei Gu
>         Attachments: YARN-6194.001.patch
>
>
> Some of the {{SchedulingPolicy}} methods need cluster capacity which is set 
> using {{#initialize}} today. However, {{initialize()}} is called only on 
> allocation reload. If nodes are added between reloads, the cluster capacity 
> is not considered until the next reload.



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