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Posted to hdfs-issues@hadoop.apache.org by "Giovanni Matteo Fumarola (JIRA)" <ji...@apache.org> on 2018/12/03 21:15:00 UTC

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

     [ https://issues.apache.org/jira/browse/HDFS-9596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Giovanni Matteo Fumarola updated HDFS-9596:
-------------------------------------------
    Status: Patch Available  (was: Open)

> Remove "Shuffle" Method From DFSUtil
> ------------------------------------
>
>                 Key: HDFS-9596
>                 URL: https://issues.apache.org/jira/browse/HDFS-9596
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Trivial
>         Attachments: HDFS-9596.2.patch, 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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