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Package org.apache.hadoop.mapred.lib

Added Classes
BinaryPartitioner Partition BinaryComparable keys using a configurable part of the bytes array returned by BinaryComparable#getBytes()
 

Changed Classes
HashPartitioner Partition keys by their Object#hashCode()
IdentityMapper Implements the identity function mapping inputs directly to outputs.
IdentityReducer Performs no reduction writing all input values directly to the output.
InverseMapper A Mapper that swaps keys and values.
LongSumReducer A Reducer that sums long values.
MultipleOutputFormat This abstract class extends the FileOutputFormat allowing to write the output data to different output files.
MultipleOutputs The MultipleOutputs class simplifies writting to additional outputs other than the job default output via the OutputCollector passed to the map() and reduce() methods of the Mapper and Reducer implementations.
MultipleSequenceFileOutputFormat This class extends the MultipleOutputFormat allowing to write the output data to different output files in sequence file output format.
MultipleTextOutputFormat This class extends the MultipleOutputFormat allowing to write the output data to different output files in Text output format.
NullOutputFormat Consume all outputs and put them in /dev/null.
TokenCountMapper A Mapper that maps text values into pairs.