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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4276) The mapred.*ID classes are inefficient for hashCode and serialization
Date Thu, 23 Oct 2008 21:08:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley updated HADOOP-4276:
----------------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]
          Status: Resolved  (was: Patch Available)

I just committed this.

> The mapred.*ID classes are inefficient for hashCode and serialization
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-4276
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4276
>             Project: Hadoop Core
>          Issue Type: Improvement
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.20.0
>
>         Attachments: h4276.patch, h4276.patch
>
>
> Currently the ID classes call toString and hash the resulting string rather than computing
a hash directly.
> The ID classes also create new instances of the higher level object in readFields (via
read) rather than re-using the object via readFields.

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