org.apache.tez.mapreduce.examples

Class MapredWordCount.MapClass

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

org.apache.tez.mapreduce.examples.MapredWordCount.MapClass

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable>

Enclosing class:

MapredWordCount

public static class MapredWordCount.MapClass
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable>

Counts the words in each line. For each line of input, break the line into words and emit them as (word, 1).

Constructor Summary

Constructors

Constructor and Description
MapredWordCount.MapClass()

Method Summary

Methods

Modifier and Type	Method and Description
void	map(org.apache.hadoop.io.LongWritable key, org.apache.hadoop.io.Text value, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable> output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.MapReduceBase

close, configure

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.hadoop.mapred.JobConfigurable

configure

Methods inherited from interface java.io.Closeable

close

Constructor Detail

MapredWordCount.MapClass

public MapredWordCount.MapClass()

Method Detail

map

public void map(org.apache.hadoop.io.LongWritable key,
       org.apache.hadoop.io.Text value,
       org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable> output,
       org.apache.hadoop.mapred.Reporter reporter)
         throws IOException

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.IntWritable>

Throws:

IOException