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https://issues.apache.org/jira/browse/MAPREDUCE-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy closed MAPREDUCE-4570.
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> ProcfsBasedProcessTree#constructProcessInfo() prints a warning if
> procfsDir/<pid>/stat is not found.
> ----------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4570
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4570
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Reporter: Ahmed Radwan
> Assignee: Ahmed Radwan
> Priority: Minor
> Fix For: 0.23.3, 2.0.2-alpha
>
> Attachments: MAPREDUCE-4570.patch
>
>
> I think a warning is misleading in this case. What is happening here is that
> the list of all processes in the system is found, and then later the
> procfsDir/<pid>/stat file for each is opened. This warning is thrown when the
> process finishes before the stat file is opened, and hence the file is no
> longer there. This could normally happen, and shouldn't signify a waring. An
> info message is sufficient. I'll be uploading a patch momentarily.
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