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 cn.lhfei.hadoop.ch05.v2.MaxTemperatureMapper.java

/**
 * @version 0.1
 *
 * @author Hefei Li
 *
 * @since Oct 30, 2014

From source file cn.lhfei.hadoop.ch05.v3.MaxTemperatureMapper.java

/**
 * @version 0.1
 *
 * @author Hefei Li
 *
 * @since Oct 30, 2014

From source file co.cask.cdap.internal.app.runtime.batch.dataset.input.DelegatingMapper.java

/**
 * A placeholder class that will be set on the {@link Job} when multiple mappers are to be used.
 *
 * @see MultipleInputs#addInput(Job, String, String, Map, Class)
 */
public class DelegatingMapper extends Mapper {

From source file co.cask.cdap.internal.app.runtime.batch.MapperWrapper.java

/**
 * Wraps user-defined implementation of {@link Mapper} class which allows perform extra configuration.
 */
public class MapperWrapper extends Mapper {

    private static final Logger LOG = LoggerFactory.getLogger(MapperWrapper.class);

From source file co.nubetech.hiho.dedup.DedupKeyMapper.java

public class DedupKeyMapper<K extends Writable, V> extends Mapper<K, V, HihoTuple<K>, V> {

    final static Logger logger = Logger.getLogger(co.nubetech.hiho.dedup.DedupKeyMapper.class);

    @Override
    public void map(K key, V val, Context context) throws IOException, InterruptedException {

From source file co.nubetech.hiho.dedup.DedupValueMapper.java

public class DedupValueMapper<K, V extends Writable> extends Mapper<K, V, HihoTuple<V>, K> {
    final static Logger logger = Logger.getLogger(co.nubetech.hiho.dedup.DedupKeyMapper.class);

    @Override
    public void map(K key, V val, Context context) throws IOException, InterruptedException {
        if (key == null) {

From source file co.nubetech.hiho.mapreduce.DBInputDelimMapper.java

public class DBInputDelimMapper extends Mapper<LongWritable, GenericDBWritable, Text, Text> {

    final static Logger logger = Logger.getLogger(co.nubetech.hiho.mapreduce.DBInputDelimMapper.class);

    private Text outkey;
    private Text outval;

From source file co.nubetech.hiho.mapreduce.DelimitedLoadMapper.java

public class DelimitedLoadMapper<K, V> extends Mapper<K, V, GenericDBWritable, GenericDBWritable> {

    private PreparedStatement stmt;
    private Connection conn;
    private ResultSetMetaData meta;
    private ArrayList<ColumnInfo> columnInfo;

From source file co.nubetech.hiho.mapreduce.GenericDBLoadDataMapper.java

public class GenericDBLoadDataMapper<K, V> extends Mapper<K, V, GenericDBWritable, NullWritable> {

    final static Logger logger = Logger.getLogger(co.nubetech.hiho.mapreduce.GenericDBLoadDataMapper.class);

    private ArrayList values;
    private ArrayList<ColumnInfo> tableInfo;

From source file co.nubetech.hiho.mapreduce.MySQLLoadDataMapper.java

public class MySQLLoadDataMapper extends Mapper<Text, FSDataInputStream, NullWritable, NullWritable> {

    final static Logger logger = Logger.getLogger(co.nubetech.hiho.mapreduce.MySQLLoadDataMapper.class);
    private Connection conn;

    public void setConnection(Connection con) throws IOException {