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

Packages that use Reducer

org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.mapreduce
org.apache.hadoop.mapreduce.lib.reduce

Uses of Reducer in org.apache.hadoop.examples

Subclasses of Reducer in org.apache.hadoop.examples

static class	SecondarySort.Reduce A reducer class that just emits the sum of the input values.
static class	WordCount.IntSumReducer

Uses of Reducer in org.apache.hadoop.mapreduce

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

Class<? extends Reducer<?,?,?,?>>	JobContext.getCombinerClass() Get the combiner class for the job.
Class<? extends Reducer<?,?,?,?>>	JobContext.getReducerClass() Get the Reducer class for the job.

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

void	Job.setCombinerClass(Class<? extends Reducer> cls) Set the combiner class for the job.
void	Job.setReducerClass(Class<? extends Reducer> cls) Set the Reducer for the job.

Uses of Reducer in org.apache.hadoop.mapreduce.lib.reduce

Subclasses of Reducer in org.apache.hadoop.mapreduce.lib.reduce

class	IntSumReducer<Key>
class	LongSumReducer<KEY>