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## Package org.apache.hadoop.mapreduce.lib.map

Class Summary
InverseMapper<K,V> | A `Mapper` that swaps keys and values.
MultithreadedMapper<K1,V1,K2,V2> | Multithreaded implementation for @link org.apache.hadoop.mapreduce.Mapper.
TokenCounterMapper | Tokenize the input values and emit each word with a count of 1.

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