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From "Jon Bringhurst (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3344) procfs stat file is not in the expected format warning
Date Thu, 12 Mar 2015 22:42:39 GMT
Jon Bringhurst created YARN-3344:
------------------------------------

             Summary: 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


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 (sorry about the janky json formatted log message):

{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 -i 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}





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