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From "Ahmed Radwan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4570) ProcfsBasedProcessTree#constructProcessInfo() prints a warning if procfsDir/<pid>/stat is not found.
Date Tue, 21 Aug 2012 17:01:41 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ahmed Radwan updated MAPREDUCE-4570:
------------------------------------

    Attachment: MAPREDUCE-4570.patch
    
> 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
>         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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