Uses of Class
org.apache.hadoop.mapred.MapReduceBase

Packages that use MapReduceBase

org.apache.hadoop.contrib.index.mapred
org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.examples.dancing	This package is a distributed implementation of Knuth's dancing links algorithm that can run under Hadoop.
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.

Uses of MapReduceBase in org.apache.hadoop.contrib.index.mapred

Subclasses of MapReduceBase in org.apache.hadoop.contrib.index.mapred

class	IndexUpdateCombiner This combiner combines multiple intermediate forms into one intermediate form.
class	IndexUpdateMapper<K extends WritableComparable,V extends Writable> This class applies local analysis on a key-value pair and then convert the result docid-operation pair to a shard-and-intermediate form pair.
class	IndexUpdateReducer This reducer applies to a shard the changes for it.

Uses of MapReduceBase in org.apache.hadoop.examples

Subclasses of MapReduceBase in org.apache.hadoop.examples

static class	MultiFileWordCount.MapClass This Mapper is similar to the one in WordCount.MapClass.
static class	PiEstimator.PiMapper Mappper class for Pi estimation.
static class	PiEstimator.PiReducer
static class	WordCount.MapClass Counts the words in each line.
static class	WordCount.Reduce A reducer class that just emits the sum of the input values.

Uses of MapReduceBase in org.apache.hadoop.examples.dancing

Subclasses of MapReduceBase in org.apache.hadoop.examples.dancing

static class

DistributedPentomino.PentMap Each map takes a line, which represents a prefix move and finds all of the solutions that start with that prefix.

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

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

class	IdentityMapper<K,V> Implements the identity function, mapping inputs directly to outputs.
class	IdentityReducer<K,V> Performs no reduction, writing all input values directly to the output.
class	InverseMapper<K,V> A Mapper that swaps keys and values.
class	LongSumReducer<K> A Reducer that sums long values.
class	RegexMapper<K> A Mapper that extracts text matching a regular expression.
class	TokenCountMapper<K> A Mapper that maps text values into pairs.