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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:
-----------------------------------
Priority: Major (was: Critical)
> 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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