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https://issues.apache.org/jira/browse/YARN-3111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348213#comment-14348213
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Peng Zhang commented on YARN-3111:
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Thanks [~kasha] for your advice, I think:
1. When cluster capacity is 0, display is not that important: so 1, 0 are all 
acceptable for me.
2. Display two percent value for resources is good. And the following question 
is what about the usage bar? And also what if more resource is supported in 
YARN?


> Fix ratio problem on FairScheduler page
> ---------------------------------------
>
>                 Key: YARN-3111
>                 URL: https://issues.apache.org/jira/browse/YARN-3111
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.6.0
>            Reporter: Peng Zhang
>            Assignee: Peng Zhang
>            Priority: Minor
>             Fix For: 2.7.0
>
>         Attachments: YARN-3111.1.patch, YARN-3111.png
>
>
> Found 3 problems on FairScheduler page:
> 1. Only compute memory for ratio even when queue schedulingPolicy is DRF.
> 2. When min resources is configured larger than real resources, the steady 
> fair share ratio is so long that it is out the page.
> 3. When cluster resources is 0(no nodemanager start), ratio is displayed as 
> "NaN% used"
> Attached image shows the snapshot of above problems. 



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