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Posted to mapreduce-dev@hadoop.apache.org by "Haibo Chen (JIRA)" <ji...@apache.org> on 2016/07/21 06:23:20 UTC

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

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5739?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Haibo Chen resolved MAPREDUCE-5739.
-----------------------------------
    Resolution: Fixed

> 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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