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

Packages that use Mapper

org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.mapreduce
org.apache.hadoop.mapreduce.lib.fieldsel
org.apache.hadoop.mapreduce.lib.input
org.apache.hadoop.mapreduce.lib.map

Uses of Mapper in org.apache.hadoop.examples

Subclasses of Mapper in org.apache.hadoop.examples

static class	SecondarySort.MapClass Read two integers from each line and generate a key, value pair as ((left, right), right).
static class	WordCount.TokenizerMapper

Uses of Mapper in org.apache.hadoop.mapreduce

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

Class<? extends Mapper<?,?,?,?>>

JobContext.getMapperClass() Get the Mapper class for the job.

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

void	Job.setMapperClass(Class<? extends Mapper> cls) Set the Mapper for the job.

Uses of Mapper in org.apache.hadoop.mapreduce.lib.fieldsel

Subclasses of Mapper in org.apache.hadoop.mapreduce.lib.fieldsel

class

FieldSelectionMapper<K,V> This class implements a mapper class that can be used to perform field selections in a manner similar to unix cut.

Uses of Mapper in org.apache.hadoop.mapreduce.lib.input

Subclasses of Mapper in org.apache.hadoop.mapreduce.lib.input

class

DelegatingMapper<K1,V1,K2,V2> An Mapper that delegates behavior of paths to multiple other mappers.

Method parameters in org.apache.hadoop.mapreduce.lib.input with type arguments of type Mapper

static void

MultipleInputs.addInputPath(Job job, Path path, Class<? extends InputFormat> inputFormatClass, Class<? extends Mapper> mapperClass) Add a Path with a custom InputFormat and Mapper to the list of inputs for the map-reduce job.

Uses of Mapper in org.apache.hadoop.mapreduce.lib.map

Subclasses of Mapper in org.apache.hadoop.mapreduce.lib.map

class	InverseMapper<K,V> A Mapper that swaps keys and values.
class	MultithreadedMapper<K1,V1,K2,V2> Multithreaded implementation for @link org.apache.hadoop.mapreduce.Mapper.
class	TokenCounterMapper Tokenize the input values and emit each word with a count of 1.

Methods in org.apache.hadoop.mapreduce.lib.map that return types with arguments of type Mapper

static <K1,V1,K2,V2> Class<Mapper<K1,V1,K2,V2>>

MultithreadedMapper.getMapperClass(JobContext job) Get the application's mapper class.

Method parameters in org.apache.hadoop.mapreduce.lib.map with type arguments of type Mapper

static <K1,V1,K2,V2> void

MultithreadedMapper.setMapperClass(Job job, Class<? extends Mapper<K1,V1,K2,V2>> cls) Set the application's mapper class.