Uses of Interface
org.apache.hadoop.mapred.Mapper

Packages that use Mapper

org.apache.hadoop.contrib.utils.join
org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.mapred	A system for scalable, fault-tolerant, distributed computation over large data collections.
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.
org.apache.hadoop.mapred.lib.aggregate	Classes for performing various counting and aggregations.
org.apache.hadoop.streaming
org.apache.hadoop.tools
org.apache.hadoop.util	Common utilities.

Uses of Mapper in org.apache.hadoop.contrib.utils.join

Classes in org.apache.hadoop.contrib.utils.join that implement Mapper

class	DataJoinMapperBase This abstract class serves as the base class for the mapper class of a data join job.
class	DataJoinReducerBase This abstract class serves as the base class for the reducer class of a data join job.
class	JobBase A common base implementing some statics collecting mechanisms that are commonly used in a typical map/reduce job.

Uses of Mapper in org.apache.hadoop.examples

Classes in org.apache.hadoop.examples that implement Mapper

static class	PiEstimator.PiMapper Mappper class for Pi estimation.
static class	WordCount.MapClass Counts the words in each line.

Uses of Mapper in org.apache.hadoop.mapred

Methods in org.apache.hadoop.mapred that return types with arguments of type Mapper

Class<? extends Mapper>

JobConf.getMapperClass()

Method parameters in org.apache.hadoop.mapred with type arguments of type Mapper

void	JobConf.setMapperClass(Class<? extends Mapper> theClass)

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

Classes in org.apache.hadoop.mapred.lib that implement Mapper

class	FieldSelectionMapReduce This class implements a mapper/reducer class that can be used to perform field selections in a manner similar to unix cut.
class	IdentityMapper Implements the identity function, mapping inputs directly to outputs.
class	InverseMapper A Mapper that swaps keys and values.
class	RegexMapper A Mapper that extracts text matching a regular expression.
class	TokenCountMapper A Mapper that maps text values into pairs.

Uses of Mapper in org.apache.hadoop.mapred.lib.aggregate

Classes in org.apache.hadoop.mapred.lib.aggregate that implement Mapper

class	ValueAggregatorCombiner This class implements the generic combiner of Abacus.
class	ValueAggregatorJobBase This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Abacus.
class	ValueAggregatorMapper This class implements the generic mapper of Abacus.
class	ValueAggregatorReducer This class implements the generic reducer of Abacus.

Uses of Mapper in org.apache.hadoop.streaming

Classes in org.apache.hadoop.streaming that implement Mapper

class

PipeMapper A generic Mapper bridge.

Uses of Mapper in org.apache.hadoop.tools

Classes in org.apache.hadoop.tools that implement Mapper

static class

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

Uses of Mapper in org.apache.hadoop.util

Classes in org.apache.hadoop.util that implement Mapper

static class	CopyFiles.FSCopyFilesMapper DFSCopyFilesMapper: The mapper for copying files from the DFS.
static class	CopyFiles.HTTPCopyFilesMapper