Example usage for org.apache.hadoop.mapreduce Reducer subclass-usage

Introduction

In this page you can find the example usage for org.apache.hadoop.mapreduce Reducer subclass-usage.

Usage

public class CardTotalReducer extends Reducer<Text, IntWritable, Text, IntWritable> {

    @Override
    public void reduce(Text key, Iterable<IntWritable> values, Context context)
            throws IOException, InterruptedException {
        int sum = 0;

From source file TestBAM.java

final class TestBAMReducer
        extends org.apache.hadoop.mapreduce.Reducer<Text, SAMRecordWritable, Text, SAMRecordWritable> {

    @Override
    protected void reduce(Text key, Iterable<SAMRecordWritable> records,
            org.apache.hadoop.mapreduce.Reducer<Text, SAMRecordWritable, Text, SAMRecordWritable>.Context ctx)

From source file AllLab_Skeleton.Lab1.WordCount_Reducer.java

/**
 *
 * @author Chintan
 */
public class WordCount_Reducer extends Reducer<Text, IntWritable, Text, IntWritable> {
    private static int count = 0;

From source file AllLab_Skeleton.Lab2.Lab2Reducer.java

/**
 *
 * @author pooja
 */
public class Lab2Reducer extends Reducer<CompositeKeyWritable, NullWritable, CompositeKeyWritable, NullWritable> {

From source file Analysis.A1_Total_Unique_Artists_on_Service.Distinct_Artist_Reducer.java

/**
 *
 * @author Chintan
 */
public class Distinct_Artist_Reducer extends Reducer<Text, IntWritable, Text, NullWritable> {

From source file Analysis.A2_Top_20_Most_Popular_Artists.Top_20_Most_Popular_Artist_Combiner.java

/**
 *
 * @author Chintan
 */
public class Top_20_Most_Popular_Artist_Combiner extends Reducer<Text, IntWritable, Text, IntWritable> {

From source file Analysis.A2_Top_20_Most_Popular_Artists.Top_20_Most_Popular_Artist_Reducer.java

/**
 *
 * @author Chintan
 */
public class Top_20_Most_Popular_Artist_Reducer extends Reducer<Text, IntWritable, NullWritable, Text> {
    private TreeMap<Integer, String> top20 = new TreeMap<Integer, String>(Collections.reverseOrder());

From source file Analysis.A3_Total_Users_By_Gender.User_Gender_Count_Reducer.java

/**
 *
 * @author Chintan
 */
public class User_Gender_Count_Reducer extends Reducer<Text, IntWritable, Text, IntWritable> {
    private IntWritable result = new IntWritable();

From source file Analysis.A4_High_Traffic_Countries.Top_10_Countries_by_User_Traffic_Combiner.java

/**
 *
 * @author Chintan
 */
public class Top_10_Countries_by_User_Traffic_Combiner extends Reducer<Text, IntWritable, Text, IntWritable> {
    public IntWritable total = new IntWritable();

From source file Analysis.A4_High_Traffic_Countries.Top_10_Countries_by_User_Traffic_Reducer.java

/**
 *
 * @author Chintan
 */
public class Top_10_Countries_by_User_Traffic_Reducer extends Reducer<Text, IntWritable, Text, IntWritable> {
    private TreeMap<Integer, String> top10 = new TreeMap<Integer, String>(Collections.reverseOrder());