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Posted to mapreduce-dev@hadoop.apache.org by "Edward Seidl (Created) (JIRA)" <ji...@apache.org> on 2012/03/30 01:19:27 UTC

[jira] [Created] (MAPREDUCE-4084) tasktracker dies at startup with ConcurrentModificationException thrown from checkDirs()

tasktracker dies at startup with ConcurrentModificationException thrown from checkDirs()
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                 Key: MAPREDUCE-4084
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4084
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: tasktracker
    Affects Versions: 1.0.1, 1.0.0
         Environment: CentOS 5.6, linux server with JBOD disks
            Reporter: Edward Seidl


if a directory named in mapred.local.dir is not writable at start-up, a ConcurrentModficationException is thrown.  this is caused by calling remove on a collection that is being iterated over.  patch MR2850.v1.3.patch from MAPREDUCE-2850 addresses this, but it hasn't been applied in the 1.0 releases.

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