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From "Ed Mazur (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1287) HashPartitioner calls hashCode() when there is only 1 reducer
Date Wed, 09 Dec 2009 21:39:18 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ed Mazur updated MAPREDUCE-1287:
--------------------------------

    Status: Patch Available  (was: Open)

> HashPartitioner calls hashCode() when there is only 1 reducer
> -------------------------------------------------------------
>
>                 Key: MAPREDUCE-1287
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1287
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.22.0
>            Reporter: Ed Mazur
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1287.2.patch, MAPREDUCE-1287.patch
>
>
> HashPartitioner could be optimized to not call the key's hashCode() if there is only
1 reducer.

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