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https://issues.apache.org/jira/browse/YARN-1156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14230635#comment-14230635
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Tsuyoshi OZAWA commented on YARN-1156:
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Make sense. Updating.

> Change NodeManager AllocatedGB and AvailableGB metrics to show decimal values
> -----------------------------------------------------------------------------
>
>                 Key: YARN-1156
>                 URL: https://issues.apache.org/jira/browse/YARN-1156
>             Project: Hadoop YARN
>          Issue Type: Improvement
>    Affects Versions: 2.1.0-beta
>            Reporter: Akira AJISAKA
>            Assignee: Tsuyoshi OZAWA
>            Priority: Minor
>              Labels: metrics, newbie
>             Fix For: 2.7.0
>
>         Attachments: YARN-1156.1.patch, YARN-1156.2.patch
>
>
> AllocatedGB and AvailableGB metrics are now integer type. If there are four 
> times 500MB memory allocation to container, AllocatedGB is incremented four 
> times by {{(int)500/1024}}, which means 0. That is, the memory size allocated 
> is actually 2000MB, but the metrics shows 0GB. Let's use float type for these 
> metrics.



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