org.apache.hadoop.examples

Class SecondarySort.MapClass

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,SecondarySort.IntPair,org.apache.hadoop.io.IntWritable>

org.apache.hadoop.examples.SecondarySort.MapClass

Enclosing class:

SecondarySort

public static class SecondarySort.MapClass
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,SecondarySort.IntPair,org.apache.hadoop.io.IntWritable>

Read two integers from each line and generate a key, value pair as ((left, right), right).

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
MapClass()

Method Summary

Modifier and Type	Method and Description
void	map(org.apache.hadoop.io.LongWritable inKey, org.apache.hadoop.io.Text inValue, org.apache.hadoop.mapreduce.Mapper.Context context)

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

cleanup, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

MapClass

public MapClass()

Method Detail

map

public void map(org.apache.hadoop.io.LongWritable inKey,
                org.apache.hadoop.io.Text inValue,
                org.apache.hadoop.mapreduce.Mapper.Context context)
         throws IOException,
                InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,SecondarySort.IntPair,org.apache.hadoop.io.IntWritable>

Throws:

IOException

InterruptedException