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https://issues.apache.org/jira/browse/YARN-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14353272#comment-14353272
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Anubhav Dhoot commented on YARN-3304:
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The intention of setting -1 as was for this issue (distinguishing unavailable
vs actually zero).
Ideally we should prevent adding the metrics to collection until they are
available. One possibility is doing it at ContainerMetrics#recordCpuUsage.
Suggest investigating if this ideal case is achievable, and if not i am fine
with making these 0 to be consistent.
> 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: Karthik Kambatla
> Priority: Blocker
>
> 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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