| Class | Description | 
|---|---|
| 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. | 
| 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. 
 | 
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