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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4605) "Text File Busy" errors launching MR tasks
Date Wed, 29 Aug 2012 16:58:09 GMT
Arun C Murthy created MAPREDUCE-4605:

             Summary: "Text File Busy" errors launching MR tasks
                 Key: MAPREDUCE-4605
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4605
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 0.22.0
            Reporter: Todd Lipcon
            Assignee: Andy Isaacson
             Fix For: 1.2.0, 0.23.3, 2.2.0-alpha

Some very small percentage of tasks fail with a "Text file busy" error.

The following was the original diagnosis:
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.
.. but turned out to be another issue as well (see below)

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