Package org.apache.hadoop.mapreduce.lib.partition

Interface Summary

InputSampler.Sampler<K,V>

Interface to sample using an InputFormat.

Class Summary

BinaryPartitioner<V>	Partition BinaryComparable keys using a configurable part of the bytes array returned by BinaryComparable.getBytes().
HashPartitioner<K,V>	Partition keys by their Object.hashCode().
InputSampler<K,V>	Utility for collecting samples and writing a partition file for TotalOrderPartitioner.
InputSampler.IntervalSampler<K,V>	Sample from s splits at regular intervals.
InputSampler.RandomSampler<K,V>	Sample from random points in the input.
InputSampler.SplitSampler<K,V>	Samples the first n records from s splits.
KeyFieldBasedComparator<K,V>	This comparator implementation provides a subset of the features provided by the Unix/GNU Sort.
KeyFieldBasedPartitioner<K2,V2>	Defines a way to partition keys based on certain key fields (also see KeyFieldBasedComparator.
TotalOrderPartitioner<K extends WritableComparable<?>,V>	Partitioner effecting a total order by reading split points from an externally generated source.