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Posted to yarn-issues@hadoop.apache.org by "Sangjin Lee (JIRA)" <ji...@apache.org> on 2016/02/26 00:14:18 UTC
[jira] [Updated] (YARN-4712) CPU Usage Metric is not captured
properly in YARN-2928
[ https://issues.apache.org/jira/browse/YARN-4712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sangjin Lee updated YARN-4712:
------------------------------
Labels: yarn-2928-1st-milestone (was: )
> CPU Usage Metric is not captured properly in YARN-2928
> ------------------------------------------------------
>
> Key: YARN-4712
> URL: https://issues.apache.org/jira/browse/YARN-4712
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Reporter: Naganarasimha G R
> Assignee: Naganarasimha G R
> Labels: yarn-2928-1st-milestone
>
> There are 2 issues with CPU usage collection
> * I was able to observe that that many times CPU usage got from {{pTree.getCpuUsagePercent()}} is ResourceCalculatorProcessTree.UNAVAILABLE(i.e. -1) but ContainersMonitor do the calculation i.e. {{cpuUsageTotalCoresPercentage = cpuUsagePercentPerCore /resourceCalculatorPlugin.getNumProcessors()}} because of which UNAVAILABLE check in {{NMTimelinePublisher.reportContainerResourceUsage}} is not encountered. so proper checks needs to be handled
> * {{EntityColumnPrefix.METRIC}} uses always LongConverter but ContainerMonitor is publishing decimal values for the CPU usage.
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