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https://issues.apache.org/jira/browse/HADOOP-1231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12517826
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Hadoop QA commented on HADOOP-1231:
-----------------------------------

+1

http://issues.apache.org/jira/secure/attachment/12363202/HADOOP-1231.patch 
applied and successfully tested against trunk revision r562608.

Test results:   
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/515/testReport/
Console output: 
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/515/console

> Add generics to Mapper and Reducer interfaces
> ---------------------------------------------
>
>                 Key: HADOOP-1231
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1231
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Owen O'Malley
>            Assignee: Tom White
>             Fix For: 0.15.0
>
>         Attachments: HADOOP-1231.patch, HADOOP-1231.patch, MapReduceTypes.html
>
>
> By making the input and output types of the Mapper and Reducers generic, we 
> can get the information from the classes and not require the user to set them 
> in the configuration.

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