[jira] [Created] (YARN-492) Too many open files error to launch a container

["Krishna Kishore Bonagiri (JIRA)" <ji...@apache.org>]

Krishna Kishore Bonagiri created YARN-492:
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             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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