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Posted to mapreduce-dev@hadoop.apache.org by "Tom White (JIRA)" <ji...@apache.org> on 2009/07/07 12:51:14 UTC

[jira] Resolved: (MAPREDUCE-724) Reducer should not be abstract in order to serve as substitute for IdentityReducer

     [ https://issues.apache.org/jira/browse/MAPREDUCE-724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tom White resolved MAPREDUCE-724.
---------------------------------

    Resolution: Duplicate

This was fixed in HADOOP-5691, both for trunk and the 0.20 branch.

> Reducer should not be abstract in order to serve as substitute for IdentityReducer
> ----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-724
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-724
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.1
>            Reporter: Sean Owen
>            Priority: Minor
>
> The old IdentityReducer class has been deprecated since the new Reducer class's default behavior is the very same. The @deprecated tag indicates Reducer is a substitute. However it is an abstract class and cannot be instantiated, which causes problems. I imagine it is just a matter of removing the 'abstract' keyword.

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