| Class | Description |
|---|---|
| IdentityMapper<INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE> |
The identity mapper emits what it is given as input
|
| IdentityReducer<MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE> |
The identity reducer outputs what it gets as input.
|
| Stage<INPUT_FORMAT extends org.apache.hadoop.mapreduce.lib.input.FileInputFormat<INPUT_KEY,INPUT_VALUE>,OUTPUT_FORMAT extends org.apache.hadoop.mapreduce.lib.output.FileOutputFormat<OUTPUT_KEY,OUTPUT_VALUE>,INPUT_KEY,INPUT_VALUE,MAP_OUTPUT_KEY,MAP_OUTPUT_VALUE,OUTPUT_KEY,OUTPUT_VALUE> |
A stage in a multi step job.
|
| StageAppender |
Something with the ability to append one or more stages to a MultistagedJob
|
| StageProvider |
Something with the ability of providing a stage in a multistaged job
|