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From "Jonathan Eagles (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4194) ConcurrentModificationError in DirectoryCollection
Date Tue, 24 Apr 2012 21:44:05 GMT
Jonathan Eagles created MAPREDUCE-4194:

             Summary: ConcurrentModificationError in DirectoryCollection
                 Key: MAPREDUCE-4194
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4194
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.3, 2.0.0
            Reporter: Jonathan Eagles
            Assignee: Jonathan Eagles

As found as part of work on MAPREDUCE-4169, it is possible for a ConcurrentModificationException
to be thrown upon disk failure. DirectoryCollection hands out its internal list structure
that is accessed across multiple threads. Upon disk failure its internal list is modified,
invalidating all current iterators to that structure.

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