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https://issues.apache.org/jira/browse/YARN-5919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated YARN-5919:
-----------------------------------
    Fix Version/s:     (was: 2.7.1)

> FairSharePolicy is not reasonable when sorting the application
> --------------------------------------------------------------
>
>                 Key: YARN-5919
>                 URL: https://issues.apache.org/jira/browse/YARN-5919
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: yarn
>    Affects Versions: 2.7.1
>         Environment: CentOS-7.1
>            Reporter: zhengchenyu
>              Labels: fairscheduler
>   Original Estimate: 504h
>  Remaining Estimate: 504h
>
> I use the FairSharePolicy to  sort the runnableApps in FSLeafQueue. For the 
> comparation of FSAppAttempt, s1Needy and s1Needy must be negtive. So 
> FairSharePolicy will use useToWeightRatio to compare.  This algorithm only 
> consider the ResourceUsage of the FSAppAttempt. There is a unreasonable 
> phenomenon: A low ResourceUsage FsAppAttemp with no demand(or request) will 
> be in front of the queue, then skip this chance of assigning container.



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