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https://issues.apache.org/jira/browse/YARN-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14385064#comment-14385064
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Anubhav Dhoot commented on YARN-3304:
-------------------------------------
ProcfsProcessTree#getCumulativeCpuTime is cumulative over time which makes
sense for CPU. The getCumulativeMem is really summing up snapshot value all for
processes in the tree, which is appropriate for memory. We could name it
something other than cumulative to make it clearer.
> 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
> 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.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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