org.processmining.BigData.common.GraphManagement.Hadoop.combiner

Class AddLongCombiner

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

org.processmining.BigData.common.GraphManagement.Hadoop.combiner.AddLongCombiner

public class AddLongCombiner
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

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
AddLongCombiner()

Method Summary

Methods

Modifier and Type	Method and Description
void	reduce(org.apache.hadoop.io.Text key, java.lang.Iterable<org.apache.hadoop.io.LongWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context) INPUT Key = Split (A->[...]) or Join ([...]->A) Value = Number of occurrences of the split/join OUTPUT Key = Split (A->[...]) or Join ([...]->A) Value = Number of occurrences of the split/join

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

AddLongCombiner

public AddLongCombiner()

Method Detail

reduce

public void reduce(org.apache.hadoop.io.Text key,
          java.lang.Iterable<org.apache.hadoop.io.LongWritable> values,
          org.apache.hadoop.mapreduce.Reducer.Context context)
            throws java.io.IOException,
                   java.lang.InterruptedException

INPUT Key = Split (A->[...]) or Join ([...]->A) Value = Number of occurrences of the split/join OUTPUT Key = Split (A->[...]) or Join ([...]->A) Value = Number of occurrences of the split/join

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Throws:

java.io.IOException

java.lang.InterruptedException