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https://issues.apache.org/jira/browse/MAPREDUCE-2374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13292946#comment-13292946
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Todd Lipcon commented on MAPREDUCE-2374:
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Yea, I've noticed it more on RHEL6 than RHEL5, I think... but I haven't looked
closely recently. I saw it on Java6, so it's not Java7-specific.
It does seem like some kind of kernel level issue: if you close() a file, it
should be immediately available to execute, but it seems on some OSes there's a
slight delay before it becomes executable, or something.
> Should not use PrintWriter to write taskjvm.sh
> ----------------------------------------------
>
> 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: Todd Lipcon
> Fix For: 0.22.1
>
> Attachments: mapreduce-2374-on-20sec.txt
>
>
> 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.
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