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Posted to hdfs-dev@hadoop.apache.org by "BELUGA BEHR (JIRA)" <ji...@apache.org> on 2015/12/23 19:58:46 UTC

[jira] [Created] (HDFS-9596) Remove "Shuffle" Method From DFSUtil

BELUGA BEHR created HDFS-9596:
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             Summary: Remove "Shuffle" Method From DFSUtil
                 Key: HDFS-9596
                 URL: https://issues.apache.org/jira/browse/HDFS-9596
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 2.7.1
            Reporter: BELUGA BEHR
            Priority: Trivial
         Attachments: Shuffle.HDFS-9596.patch

DFSUtil contains a "shuffle" routine that shuffles arrays.  With a little wrapping, Java Collections class can shuffle.  This code is superfluous and undocumented.  The method returns an array, though it does not specify if it returns the same array or a new, copy, array of shuffled items.

It is only used in one place, so it is better to simply remove and substitute this implementation with the java Collections implementation.



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