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Using JMSL in Hadoop MapReduce Applications
The prototypical Hadoop MapReduce application has at least one Mapper class, one Reducer class, and one driver class. The Mapper class reads the input data and creates intermediate data. The Reducer class accumulates intermediate information and emits a combined result. The Driver class extends the Hadoop class Configured and implements the Hadoop Tool interface, and is used to configure and execute the job.
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