org.apache.hadoop.examples
Class SecondarySort.MapClass

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<LongWritable,Text,SecondarySort.IntPair,IntWritable>
      extended by org.apache.hadoop.examples.SecondarySort.MapClass
Enclosing class:
SecondarySort

public static class SecondarySort.MapClass
extends Mapper<LongWritable,Text,SecondarySort.IntPair,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
Mapper.Context
 
Constructor Summary
SecondarySort.MapClass()
           
 
Method Summary
 void map(LongWritable inKey, Text inValue, Mapper.Context context)
          Called once for each key/value pair in the input split.
 
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

SecondarySort.MapClass

public SecondarySort.MapClass()
Method Detail

map

public void map(LongWritable inKey,
                Text inValue,
                Mapper.Context context)
         throws IOException,
                InterruptedException
Description copied from class: Mapper
Called once for each key/value pair in the input split. Most applications should override this, but the default is the identity function.

Overrides:
map in class Mapper<LongWritable,Text,SecondarySort.IntPair,IntWritable>
Throws:
IOException
InterruptedException


Copyright © 2009 The Apache Software Foundation