files disappearing on dfs
-------------------------

                 Key: HADOOP-2665
                 URL: https://issues.apache.org/jira/browse/HADOOP-2665
             Project: Hadoop
          Issue Type: Bug
          Components: dfs
    Affects Versions: 0.16.0
            Reporter: Christian Kunz


We have rare instances where we see files disappearing after they have been 
renamed.

Because of the rarity, it is hard to reproduce. In the latest instance, the 
destination files (900 of them) existed before the renaming operation with the 
same filenames and got deleted just before the new files got renamed. It is 
possible, but not sure, that all instances of file-disappearing are of this 
nature.

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