@InterfaceAudience.Private @InterfaceStability.Unstable

# Package org.apache.hadoop.mapreduce.task

- Class Summary
  Class | Description
  --- | ---
  JobContextImpl | A read-only view of the job that is provided to the tasks while they are running.
  MapContextImpl<KEYIN,VALUEIN,KEYOUT,VALUEOUT> | The context that is given to the `Mapper`.
  ReduceContextImpl<KEYIN,VALUEIN,KEYOUT,VALUEOUT> | The context passed to the `Reducer`.
  TaskAttemptContextImpl | The context for task attempts.
  TaskAttemptContextImpl.DummyReporter |
  TaskInputOutputContextImpl<KEYIN,VALUEIN,KEYOUT,VALUEOUT> | A context object that allows input and output from the task.

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