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From "Jun Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4256) YARN fair scheduler vcores with decimal values
Date Wed, 21 Oct 2015 01:14:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14966068#comment-14966068

Jun Gong commented on YARN-4256:

Thanks [~zxu] for the review and comments.

Attach a new patch to address it and add a new test for the case '1024. mb'.

> YARN fair scheduler vcores with decimal values
> ----------------------------------------------
>                 Key: YARN-4256
>                 URL: https://issues.apache.org/jira/browse/YARN-4256
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.7.1
>            Reporter: Prabhu Joseph
>            Assignee: Jun Gong
>            Priority: Minor
>             Fix For: 2.7.2
>         Attachments: YARN-4256.001.patch, YARN-4256.002.patch
> When the queue with vcores is in decimal value, the value after the decimal point is
taken as vcores by FairScheduler.
> For the below queue,
>         <minResources>20000 mb,20 vcores,20.25 disks</minResources>
>         <maxResources>30000 mb,40.2 vcores,30.25 disks</maxResources>
> When many applications submitted  parallely into queue, all were in PENDING state as
the vcores is taken as 2 skipping the value 40.
> The code FairSchedulerConfiguration.java to Pattern match the vcores has to be improved
in such a way either throw AllocationConfigurationException("Missing resource") or consider
the value before decimal.

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