RawLocalFileSystem.listStatus() should not throw FileNotFound exception if a 
file goes missing while the list is being computed
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                 Key: HADOOP-4167
                 URL: https://issues.apache.org/jira/browse/HADOOP-4167
             Project: Hadoop Core
          Issue Type: Bug
          Components: dfs
            Reporter: Amar Kamat


{{RawLocalFileSystem.listStatus()}} first caches the filenames and then gets 
their statuses. Since there is no directory locking, other processes can delete 
files in between making the cached filenames invalid. Getting the filestatus of 
missing file results into {{FileNotFound}} exception.

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