org.apache.hadoop.examples
Classes 
AggregateWordCount
AggregateWordCount.WordCountPlugInClass
AggregateWordHistogram
AggregateWordHistogram.AggregateWordHistogramPlugin
ExampleDriver
Grep
Join
PiEstimator
PiEstimator.PiMapper
PiEstimator.PiReducer
RandomTextWriter
RandomWriter
SleepJob
Sort
WordCount
WordCount.MapClass
WordCount.Reduce