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Posted to mapreduce-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2012/11/05 21:40:13 UTC

[jira] [Updated] (MAPREDUCE-4771) KeyFieldBasedPartitioner not partitioning properly when configured

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated MAPREDUCE-4771:
----------------------------------

    Target Version/s: 2.0.3-alpha, 0.23.5
              Status: Patch Available  (was: Open)
    
> KeyFieldBasedPartitioner not partitioning properly when configured
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4771
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4771
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.0.1-alpha, 0.23.3
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: MAPREDUCE-4771.patch
>
>
> Relative to Hadoop 0.20/1.x, KeyFieldBasedPartitioner is not distributing across partitions properly when configured.  This is related to the double-configure issue as described in HADOOP-7425.  KeyFieldBasedPartitioner is getting configured twice, and that ends up duplicating the keyspecs and causing the keys to be hashed twice.
> KeyFieldBasedPartitioner should not duplicate keyspecs when configured twice.

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