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Package org.apache.pig.backend.hadoop.executionengine.mapReduceLayer

Added Classes
NoopFilterRemoverUtil  
PigInputFormat.RecordReaderFactory Helper class to create record reader
PigMapBase  
PigMapBase.IllustratorContext  
PigMapReduce  
PigMapReduce.Reduce  
PigMapReduce.Reduce.IllustratorContextImpl  
PigMapReduce.Reduce.IllustratorContextImpl.
IllustratorValueIterable
 
PigMapReduce.Reduce.IllustratorContextImpl.
IllustratorValueIterator
 
 

Changed Classes and Interfaces
PigHadoopLogger A singleton class that implements the PigLogger interface for use in map reduce context.
PigInputFormat  
PigReducerEstimator Interface to implement when you want to use a custom approach to estimating the number of reducers for a job.
PigSplit The main split class that maintains important information about the input split.
PigStatsOutputSizeReader Interface to implement when you want to customize the way of computing the size of output in PigStats.