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Posted to yarn-issues@hadoop.apache.org by "Weiwei Yang (JIRA)" <ji...@apache.org> on 2019/08/09 06:48:00 UTC
[jira] [Assigned] (YARN-9733) Method getCpuUsagePercent in Class
ProcfsBasedProcessTree return 0 when subprocess of container dead
[ https://issues.apache.org/jira/browse/YARN-9733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Weiwei Yang reassigned YARN-9733:
---------------------------------
Assignee: qian han
> Method getCpuUsagePercent in Class ProcfsBasedProcessTree return 0 when subprocess of container dead
> ----------------------------------------------------------------------------------------------------
>
> Key: YARN-9733
> URL: https://issues.apache.org/jira/browse/YARN-9733
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: qian han
> Assignee: qian han
> Priority: Major
>
> The method getTotalProcessJiffies only gets jiffies for running processes not dead processes.
> For example, process pid100 and its children pid200 and pid300.
> We call getCpuUsagePercent the first time, assume that pid100 has a jiffies 1000, pid200 2000 and pid300 3000. The totalProcessJiffies1 is 6000.
> And We kill pid300. Then we call getCpuUsagePercent the second time, assume that pid100 has a jiffies 1100, pid200 2200. The totalProcessJiffies2 is 3300.
> So we got a cpu usage percent 0.
> I would like to fix this bug.
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