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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-8657) User limit calculation should be read-lock-protected within LeafQueue
Date Fri, 16 Nov 2018 18:05:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-8657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wangda Tan updated YARN-8657:
-----------------------------
    Target Version/s: 3.2.1, 3.1.3  (was: 3.1.2, 3.2.1)

> User limit calculation should be read-lock-protected within LeafQueue
> ---------------------------------------------------------------------
>
>                 Key: YARN-8657
>                 URL: https://issues.apache.org/jira/browse/YARN-8657
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler
>            Reporter: Sumana Sathish
>            Assignee: Wangda Tan
>            Priority: Critical
>         Attachments: YARN-8657.001.patch, YARN-8657.002.patch
>
>
> When async scheduling is enabled, user limit calculation could be wrong: 
> It is possible that scheduler calculated a user_limit, but inside {{canAssignToUser}}
it becomes staled. 
> We need to protect user limit calculation.



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