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https://issues.apache.org/jira/browse/MAPREDUCE-2374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated MAPREDUCE-2374:
--------------------------------------

       Resolution: Fixed
    Fix Version/s:     (was: 0.22.1)
                   2.2.0-alpha
                   1.2.0
         Assignee: Andy Isaacson  (was: Todd Lipcon)
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

I've just committed Andy's latest patches to to branch-1, branch-2, and trunk. 
Thanks a lot for the contribution, Andy, and thanks a lot to everyone for the 
discussion to get to the bottom of this issue.
                
> "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: 1.2.0, 2.2.0-alpha
>
>         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)

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