@InterfaceAudience.Private @InterfaceStability.Unstable

Package org.apache.hadoop.mapreduce.task.reduce

Interface Summary
ExceptionReporter An interface for reporting exceptions to other threads
MergeManager<K,V> An interface for a reduce side merge that works with the default Shuffle implementation.
ShuffleScheduler<K,V>  
 

Class Summary
InMemoryReader<K,V> IFile.InMemoryReader to read map-outputs present in-memory.
InMemoryWriter<K,V>  
MapHost  
MapOutput<K,V>  
MapOutput.MapOutputComparator<K,V>  
MergeManagerImpl<K,V>  
Shuffle<K,V>  
ShuffleClientMetrics  
ShuffleHeader Shuffle Header information that is sent by the TaskTracker and deciphered by the Fetcher thread of Reduce task
ShuffleSchedulerImpl<K,V>  
 

Enum Summary
MapHost.State  
 

Exception Summary
Shuffle.ShuffleError  
 



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