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https://issues.apache.org/jira/browse/YARN-3344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15281741#comment-15281741
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Daniel Templeton commented on YARN-3344:
----------------------------------------
[~ajisakaa], I'm pretty sure you can get away with just {{[^)]}} instead of
{{[^\\)]}}.
> 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
>
>
> 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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