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https://issues.apache.org/jira/browse/HADOOP-2536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12659059#action_12659059
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Enis Soztutar commented on HADOOP-2536:
---------------------------------------

Indeed, there is an example checked-in with the patch. You can find it at 
src/examples/org/apache/hadoop/examples/DBCountPageView.java. You can use the 
example to use local hsqldb or you may configure it to use an external DB. 

> MapReduce for MySQL
> -------------------
>
>                 Key: HADOOP-2536
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2536
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>    Affects Versions: 0.19.0
>            Reporter: Fredrik Hedberg
>            Assignee: Fredrik Hedberg
>            Priority: Minor
>             Fix For: 0.19.0
>
>         Attachments: database-2.diff, database.diff, hsqldb.tar.gz, 
> mapred_jdbc_v3.patch
>
>
> Add support for running MapReduce jobs over data residing in a MySQL table.

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