| Class | Description |
|---|---|
| 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
Mapper.Context implementations. |
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