Uses of Class
org.apache.hadoop.mapreduce.Partitioner

Packages that use Partitioner

Package	Description
org.apache.hadoop.mapred.lib
org.apache.hadoop.mapreduce
org.apache.hadoop.mapreduce.lib.output
org.apache.hadoop.mapreduce.lib.partition

Uses of Partitioner in org.apache.hadoop.mapred.lib

Subclasses of Partitioner in org.apache.hadoop.mapred.lib

Modifier and Type	Class	Description
class	BinaryPartitioner<V>	Partition BinaryComparable keys using a configurable part of the bytes array returned by BinaryComparable.getBytes().
class	KeyFieldBasedPartitioner<K2,V2>	Defines a way to partition keys based on certain key fields (also see KeyFieldBasedComparator.
class	TotalOrderPartitioner<K,V>	Partitioner effecting a total order by reading split points from an externally generated source.

Uses of Partitioner in org.apache.hadoop.mapreduce

Methods in org.apache.hadoop.mapreduce that return types with arguments of type Partitioner

Modifier and Type	Method	Description
Class<? extends Partitioner<?,?>>	JobContext.getPartitionerClass()	Get the Partitioner class for the job.

Method parameters in org.apache.hadoop.mapreduce with type arguments of type Partitioner

Modifier and Type	Method	Description
void	Job.setPartitionerClass(Class<? extends Partitioner> cls)	Set the Partitioner for the job.

Uses of Partitioner in org.apache.hadoop.mapreduce.lib.output

Methods in org.apache.hadoop.mapreduce.lib.output with parameters of type Partitioner

Modifier and Type	Method	Description
static <K extends WritableComparable<?>, V extends Writable> Writable	MapFileOutputFormat.getEntry(org.apache.hadoop.io.MapFile.Reader[] readers, Partitioner<K,V> partitioner, K key, V value)	Get an entry from output generated by this class.

Uses of Partitioner in org.apache.hadoop.mapreduce.lib.partition

Subclasses of Partitioner in org.apache.hadoop.mapreduce.lib.partition

Modifier and Type	Class	Description
class	BinaryPartitioner<V>	Partition BinaryComparable keys using a configurable part of the bytes array returned by BinaryComparable.getBytes().
class	HashPartitioner<K,V>	Partition keys by their Object.hashCode().
class	KeyFieldBasedPartitioner<K2,V2>	Defines a way to partition keys based on certain key fields (also see KeyFieldBasedComparator.
class	RehashPartitioner<K,V>	This partitioner rehashes values returned by Object.hashCode() to get smoother distribution between partitions which may improve reduce reduce time in some cases and should harm things in no cases.
class	TotalOrderPartitioner<K,V>	Partitioner effecting a total order by reading split points from an externally generated source.