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Date: Tue, 17 May 2016 22:41:13 +0000 (UTC)
From: "Daniel Templeton (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
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Subject: [jira] [Commented] (YARN-3344) procfs stat file is not in the
 expected format warning
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archived-at: Tue, 17 May 2016 22:41:15 -0000


    [ https://issues.apache.org/jira/browse/YARN-3344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15287790#comment-15287790 ] 

Daniel Templeton commented on YARN-3344:
----------------------------------------

See https://builds.apache.org/job/PreCommit-YARN-Build/11493/artifact/patchprocess/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt

> procfs stat file is not in the expected format warning
> ------------------------------------------------------
>
>                 Key: YARN-3344
>                 URL: https://issues.apache.org/jira/browse/YARN-3344
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Jon Bringhurst
>            Assignee: Akira AJISAKA
>         Attachments: YARN-3344-trunk.005.patch, YARN-3344.06.patch, YARN-3344.07.patch, YARN-3344.08.patch
>
>
> Although this doesn't appear to be causing any functional issues, it is spamming our log files quite a bit. :)
> It appears that the regex in ProcfsBasedProcessTree doesn't work for all /proc/<pid>/stat files.
> Here's the error I'm seeing:
> {noformat}
>     "source_host": "asdf",
>     "method": "constructProcessInfo",
>     "level": "WARN",
>     "message": "Unexpected: procfs stat file is not in the expected format for process with pid 6953"
>     "file": "ProcfsBasedProcessTree.java",
>     "line_number": "514",
>     "class": "org.apache.hadoop.yarn.util.ProcfsBasedProcessTree",
> {noformat}
> And here's the basic info on process with pid 6953:
> {noformat}
> [asdf ~]$ cat /proc/6953/stat
> 6953 (python2.6 /expo) S 1871 1871 1871 0 -1 4202496 9364 1080 0 0 25 3 0 0 20 0 1 0 144918696 205295616 5856 18446744073709551615 1 1 0 0 0 0 0 16781312 2 18446744073709551615 0 0 17 13 0 0 0 0 0
> [asdf ~]$ ps aux|grep 6953
> root      6953  0.0  0.0 200484 23424 ?        S    21:44   0:00 python2.6 /export/apps/salt/minion-scripts/module-sync.py
> jbringhu 13481  0.0  0.0 105312   872 pts/0    S+   22:13   0:00 grep -i 6953
> [asdf ~]$ 
> {noformat}
> This is using 2.6.32-431.11.2.el6.x86_64 in RHEL 6.5.



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