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

Packages that use MapReduceBase

org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.
org.apache.hadoop.tools
org.apache.hadoop.util	Common utilities.

Uses of MapReduceBase in org.apache.hadoop.examples

Subclasses of MapReduceBase in org.apache.hadoop.examples

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.mapred.lib

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

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

Uses of MapReduceBase in org.apache.hadoop.tools

Subclasses of MapReduceBase in org.apache.hadoop.tools

static class

Logalyzer.LogRegexMapper A Mapper that extracts text matching a regular expression.

Uses of MapReduceBase in org.apache.hadoop.util

Subclasses of MapReduceBase in org.apache.hadoop.util

static class	CopyFiles.CopyFilesMapper Base-class for all mappers for distcp
static class	CopyFiles.FSCopyFilesMapper DFSCopyFilesMapper: The mapper for copying files from the DFS.
static class	CopyFiles.HTTPCopyFilesMapper