Example for contrib/data_join
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                 Key: HADOOP-1449
                 URL: https://issues.apache.org/jira/browse/HADOOP-1449
             Project: Hadoop
          Issue Type: Task
            Reporter: Senthil Subramanian
            Priority: Minor


DataJoin under 
"contrib/data_join/src/java/org/apache/hadoop/contrib/utils/join" is useful but 
is missing examples. I plan to add a simple example which can demonstrate a 
INNER JOIN between two text files based on the values on a column using this 
framework.

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