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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-476) ProcfsBasedProcessTree info message confuses users
Date Thu, 18 Apr 2013 13:09:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13635135#comment-13635135
] 

Hudson commented on YARN-476:
-----------------------------

Integrated in Hadoop-Hdfs-trunk #1376 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1376/])
    YARN-476. ProcfsBasedProcessTree info message confuses users. (sandyr via tucu) (Revision
1469093)

     Result = FAILURE
tucu : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1469093
Files : 
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ProcfsBasedProcessTree.java

                
> ProcfsBasedProcessTree info message confuses users
> --------------------------------------------------
>
>                 Key: YARN-476
>                 URL: https://issues.apache.org/jira/browse/YARN-476
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.0.3-alpha, 0.23.6
>            Reporter: Jason Lowe
>            Assignee: Sandy Ryza
>            Priority: Minor
>             Fix For: 2.0.5-beta
>
>         Attachments: YARN-476.patch
>
>
> ProcfsBasedProcessTree has a habit of emitting not-so-helpful messages such as the following:
> {noformat}
> 2013-03-13 12:41:51,957 INFO [communication thread] org.apache.hadoop.yarn.util.ProcfsBasedProcessTree:
The process 28747 may have finished in the interim.
> 2013-03-13 12:41:51,958 INFO [communication thread] org.apache.hadoop.yarn.util.ProcfsBasedProcessTree:
The process 28978 may have finished in the interim.
> 2013-03-13 12:41:51,958 INFO [communication thread] org.apache.hadoop.yarn.util.ProcfsBasedProcessTree:
The process 28979 may have finished in the interim.
> {noformat}
> As described in MAPREDUCE-4570, this is something that naturally occurs in the process
of monitoring processes via procfs.  It's uninteresting at best and can confuse users who
think it's a reason their job isn't running as expected when it appears in their logs.
> We should either make this DEBUG or remove it entirely.

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