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https://issues.apache.org/jira/browse/YARN-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14387645#comment-14387645
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Hitesh Shah commented on YARN-3304:
-----------------------------------

[~kasha]  The reason I re-opened this was because now, we cannot write a common 
lightweight resource calculator that can work with multiple versions of hadoop. 
To change tez, we will need to create shims based on which version of hadoop, 
the plugin is being built for. 


> ResourceCalculatorProcessTree#getCpuUsagePercent default return value is 
> inconsistent with other getters
> --------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-3304
>                 URL: https://issues.apache.org/jira/browse/YARN-3304
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>            Reporter: Junping Du
>            Assignee: Junping Du
>            Priority: Blocker
>             Fix For: 2.7.0
>
>         Attachments: YARN-3304-v2.patch, YARN-3304-v3.patch, 
> YARN-3304-v4-boolean-way.patch, YARN-3304-v4-negative-way-MR.patch, 
> YARN-3304-v4-negtive-value-way.patch, YARN-3304-v6-no-rename.patch, 
> YARN-3304-v6-with-rename.patch, YARN-3304-v7.patch, YARN-3304-v8.patch, 
> YARN-3304.patch, yarn-3304-5.patch
>
>
> Per discussions in YARN-3296, getCpuUsagePercent() will return -1 for 
> unavailable case while other resource metrics are return 0 in the same case 
> which sounds inconsistent.



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