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Posted to mapreduce-dev@hadoop.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2009/07/07 12:39:14 UTC
[jira] Created: (MAPREDUCE-724) Reducer should not be abstract in
order to serve as substitute for IdentityReducer
Reducer should not be abstract in order to serve as substitute for IdentityReducer
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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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[jira] Resolved: (MAPREDUCE-724) Reducer should not be abstract in
order to serve as substitute for IdentityReducer
Posted by "Tom White (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAPREDUCE-724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tom White resolved MAPREDUCE-724.
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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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