[jira] [Created] (MAPREDUCE-5739) DirectoryCollection#createNonExistentDirs() may use an invalid iterator

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created MAPREDUCE-5739:
---------------------------------

             Summary: DirectoryCollection#createNonExistentDirs() may use an invalid iterator
                 Key: MAPREDUCE-5739
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5739
             Project: Hadoop Map/Reduce
          Issue Type: Bug
            Reporter: Ted Yu


Here is related code:
{code}
    for (final String dir : localDirs) {
      try {
        createDir(localFs, new Path(dir), perm);
      } catch (IOException e) {
        LOG.warn("Unable to create directory " + dir + " error " +
            e.getMessage() + ", removing from the list of valid directories.");
        localDirs.remove(dir);
{code}
Call to localDirs.remove() modifies Iterable "localDirs" which invalidates the iterator.



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