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Arun C Murthy commented on MAPREDUCE-2374: ------------------------------------------ Also, a simple test case to ensure we don't introduce "bash -c" in future would have been helpful. > "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, 0.23.3, 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) -- 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