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.
RegexMapper<K> A Mapper that extracts text matching a regular expression.
TokenCounterMapper Tokenize the input values and emit each word with a count of 1.
WrappedMapper<KEYIN,VALUEIN,KEYOUT,VALUEOUT> A Mapper which wraps a given one to allow custom WrappedMapper.Context implementations.

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