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From "Krishna Kishore Bonagiri (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-492) Too many open files error to launch a container
Date Wed, 20 Mar 2013 11:27:15 GMT
Krishna Kishore Bonagiri created YARN-492:
---------------------------------------------

             Summary: Too many open files error to launch a container
                 Key: YARN-492
                 URL: https://issues.apache.org/jira/browse/YARN-492
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 2.0.0-alpha
         Environment: RedHat Linux
            Reporter: Krishna Kishore Bonagiri


I am running a date command with YARN's distributed shell example in a loop of 1000 times
in this way:

yarn jar /home/kbonagir/yarn/hadoop-2.0.0-alpha/share/hadoop/mapreduce/hadoop-yarn-applications-distributedshell-2.0.0-alpha.jar
org.apache.hadoop.yarn.applications.distributedshell.Client --jar /home/kbonagir/yarn/hadoop-2.0.0-alpha/share/hadoop/mapreduce/hadoop-yarn-applications-distributedshell-2.0.0-alpha.jar
--shell_command date --num_containers 2


Around 730th time or so, I am getting an error in node manager's log saying that it failed
to launch container because there are "Too many open files" and when I observe through lsof
command,I find that there is one instance of this kind of file is left for each run of Application
Master, and it kept growing as I am running it in loop.

node1:44871->node1:50010

Thanks,
Kishore

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