org.apache.mahout.cf.taste.hadoop.item

Class ItemIDIndexReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<VarIntWritable,VarLongWritable,VarIntWritable,VarLongWritable>

org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexReducer

public final class ItemIDIndexReducer
extends org.apache.hadoop.mapreduce.Reducer<VarIntWritable,VarLongWritable,VarIntWritable,VarLongWritable>

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

Constructors

Constructor and Description
ItemIDIndexReducer()

Method Summary

Modifier and Type	Method and Description
protected void	reduce(VarIntWritable index, Iterable<VarLongWritable> possibleItemIDs, org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

cleanup, run, setup

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ItemIDIndexReducer

public ItemIDIndexReducer()

Method Detail

reduce

protected void reduce(VarIntWritable index,
                      Iterable<VarLongWritable> possibleItemIDs,
                      org.apache.hadoop.mapreduce.Reducer.Context context)
               throws IOException,
                      InterruptedException

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<VarIntWritable,VarLongWritable,VarIntWritable,VarLongWritable>

Throws:

IOException

InterruptedException