# Package org.apache.hadoop.mapred

- Class Summary
  Class | Description
  --- | ---
  LocalContainerLauncher | Runs the container task locally in a thread.
  MapReduceChildJVM |
  MapTaskAttemptImpl |
  ReduceTaskAttemptImpl |
  TaskAttemptListenerImpl | This class is responsible for talking to the task umblical.
  WrappedJvmID | A simple wrapper for increasing the visibility.
  WrappedPeriodicStatsAccumulator |
  WrappedProgressSplitsBlock |
  YarnOutputFiles | Manipulate the working area for the transient store for maps and reduces.

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