[jira] [Updated] (MAPREDUCE-2374) "Text File Busy" errors launching MR tasks

["Matt Foley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Foley updated MAPREDUCE-2374:
----------------------------------

    Fix Version/s:     (was: 1.2.0)
    
> "Text File Busy" errors launching MR tasks
> ------------------------------------------
>
>                 Key: MAPREDUCE-2374
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2374
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Andy Isaacson
>             Fix For: 0.23.3, 2.0.2-alpha, 1.1.2
>
>         Attachments: failed_taskjvmsh.strace, mapreduce-2374-2.txt, mapreduce-2374-branch-1.patch, mapreduce-2374-on-20sec.txt, mapreduce-2374.txt, mapreduce-2374.txt, mapreduce-2374.txt, successfull_taskjvmsh.strace
>
>
> Some very small percentage of tasks fail with a "Text file busy" error.
> The following was the original diagnosis:
> {quote}
> Our use of PrintWriter in TaskController.writeCommand is unsafe, since that class swallows all IO exceptions. We're not currently checking for errors, which I'm seeing result in occasional task failures with the message "Text file busy" - assumedly because the close() call is failing silently for some reason.
> {quote}
> .. but turned out to be another issue as well (see below)

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira