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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.
NullOutputFormat Consume all outputs and put them in /dev/null.
TokenCountMapper A Mapper that maps text values into pairs.