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

From source file com.rockstor.compact.garbagecollect.GarbageChunkCombine.java

public class GarbageChunkCombine extends
        Reducer<ImmutableBytesWritable, ImmutableBytesWritable, ImmutableBytesWritable, ImmutableBytesWritable> {
    /**
     * Called once at the start of the task.
     */
    @Override

From source file com.rockstor.compact.garbagecollect.GarbageChunkReduce.java

public class GarbageChunkReduce extends
        Reducer<ImmutableBytesWritable, ImmutableBytesWritable, ImmutableBytesWritable, ImmutableBytesWritable> {
    public static Logger LOG = Logger.getLogger(GarbageChunkReduce.class);
    private Chunk chunk = null;
    private boolean notFirstRock = false;
    private byte[] lastRockId = Bytes.add(Bytes.toBytes(0L), Bytes.toBytes(0L));

From source file com.shmsoft.dmass.main.Reduce.java

public class Reduce extends Reducer<MD5Hash, MapWritable, Text, Text> implements ActionListener {

    protected ColumnMetadata columnMetadata;
    protected ZipFileWriter zipFileWriter = new ZipFileWriter();
    protected int outputFileCount;
    private DecimalFormat UPIFormat = new DecimalFormat("00000");

From source file com.sirius.hadoop.job.onlinetime.StatusReducer.java

/**
 * Created by pippo on 14-9-19.
 */
public class StatusReducer extends Reducer<StatusKey, OnlineRecord, Text, LongWritable> {

    private static final Text outKey = new Text();

From source file com.skp.experiment.common.mapreduce.IdentityReducer.java

public class IdentityReducer<K, V> extends Reducer<K, V, K, V> {

    @Override
    protected void reduce(K key, Iterable<V> values, Context context) throws IOException, InterruptedException {
        for (V value : values) {
            context.write(key, value);

From source file com.skp.experiment.common.mapreduce.ToVectorAndPrefReducer.java

public final class ToVectorAndPrefReducer
        extends Reducer<IntWritable, VectorOrPrefWritable, IntWritable, VectorAndPrefsWritable> {

    @Override
    protected void reduce(IntWritable key, Iterable<VectorOrPrefWritable> values, Context context)
            throws IOException, InterruptedException {

From source file com.soteradefense.dga.louvain.mapreduce.LouvainTableSynthesizerReducer.java

public class LouvainTableSynthesizerReducer extends Reducer<Text, Text, Text, NullWritable> {

    private static final Logger logger = LoggerFactory.getLogger(LouvainTableSynthesizerReducer.class);

    @Override
    protected void reduce(Text key, Iterable<Text> values, Context context)

From source file com.splicemachine.mapreduce.HBaseBulkLoadReducer.java

/**
 * @author Scott Fines
 *         Date: 2/28/14
 */
public class HBaseBulkLoadReducer
        extends Reducer<ImmutableBytesWritable, ImmutableBytesWritable, ImmutableBytesWritable, KeyValue> {

From source file com.springdeveloper.hadoop.IntSumReducer.java

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

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

From source file com.sreejith.loganalyzer.mapreduce.LogReducer.java

public class LogReducer extends Reducer<IntWritable, IntWritable, IntWritable, IntWritable> {

    private static Logger logger = LoggerFactory.getLogger(LogReducer.class);

    public void reduce(IntWritable key, Iterable<IntWritable> values, Context context)
            throws IOException, InterruptedException {