It is nice if hadoop provides NonSplitable TextInputFormat and 
SequenceFileInputFormat
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                 Key: HADOOP-1617
                 URL: https://issues.apache.org/jira/browse/HADOOP-1617
             Project: Hadoop
          Issue Type: Improvement
            Reporter: Runping Qi



As more applications find reduce-non option useful, they also want to control 
the splitability of the inputs.
A simple way to do this is to implement a class that extends 
SequenceFileInputFormat/TextInputFormat class.
It would be nice if the Framework provides such classes.



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