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

Introduction

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

Usage

From source file com.github.ygf.pagerank.PageRankTopNMapper.java

public class PageRankTopNMapper extends Mapper<ShortWritable, FloatArrayWritable, FloatWritable, IntWritable> {

    // TODO: Create base classes TopN{Mapper,Reducer} to avoid duplicate 
    // code in {PageRank,InLinks}TopN{Mapper,Reducer}.

    private PriorityQueue<Map.Entry<Float, Integer>> topN;

From source file com.google.appengine.tools.mapreduce.AppEngineMapper.java

/**
 * An AppEngineMapper is a Hadoop Mapper that is run via a sequential
 * series of task queue executions.
 *
 * <p>As such, the  {@link #run(org.apache.hadoop.mapreduce.Mapper.Context)}
 * method is unusable (since task state doesn't persist from one queue iteration

From source file com.gsvic.csmr.CSMRMapper.java

public class CSMRMapper extends Mapper<Text, VectorWritable, IntWritable, DocumentWritable> {

    @Override
    public void map(Text key, VectorWritable value, Context context) throws IOException, InterruptedException {
        DocumentWritable p = new DocumentWritable(new Text(key.toString()), new VectorWritable(value.get()));
        context.write(new IntWritable(1), p);

From source file com.hhscyber.nl.tweets.hbase2.Hbase2Mapper.java

/**
 *
 * @author eve
 */
public class Hbase2Mapper extends Mapper<LongWritable, Text, Text, Text> {
    Text timestamp;

From source file com.hhscyber.nl.tweets.hbasefill.HbaseFillMapper.java

/**
 *
 * @author eve
 */
public class HbaseFillMapper extends Mapper<LongWritable, Text, Text, IntWritable> {
    private final IntWritable one = new IntWritable(1);

From source file com.hhscyber.nl.tweets.processtweets.ProcessTweetsMapper.java

/**
 *
 * @author eve
 */
public class ProcessTweetsMapper extends Mapper<LongWritable, Text, Text, IntWritable> {
    private final IntWritable one = new IntWritable(1);

From source file com.hhscyber.nl.tweets.svm.train.TrainMapper.java

/**
 *
 * @author eve
 */
public class TrainMapper extends Mapper<LongWritable, Text, Text, Text> {

From source file com.hortonworks.mapreduce.URLCountM.java

/**
 *
 * @author aervits
 */
public class URLCountM extends Mapper<Text, Text, Text, IntWritable> {
    private static final Logger LOG = Logger.getLogger(URLCountM.class.getName());

From source file com.hortonworks.pso.data.generator.mapreduce.DataGenMapper.java

public class DataGenMapper extends Mapper<LongWritable, NullWritable, NullWritable, Text> {

    private RecordGenerator recordGenerator;
    //private long recordCount = 10;

    protected void setup(Context context) {

From source file com.hortonworks.pso.data.generator.mapreduce.KafkaDataGenMapper.java

public class KafkaDataGenMapper extends Mapper<LongWritable, NullWritable, Object, Object> {

    public static final String CONFIG_FILE = "app.config.file";

    private RecordGenerator recordGenerator;