org.apache.hadoop.examples

Class BaileyBorweinPlouffe.BbpMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<LongWritable,IntWritable,LongWritable,BytesWritable>

org.apache.hadoop.examples.BaileyBorweinPlouffe.BbpMapper

Enclosing class:

BaileyBorweinPlouffe

public static class BaileyBorweinPlouffe.BbpMapper
extends Mapper<LongWritable,IntWritable,LongWritable,BytesWritable>

Mapper class computing digits of Pi.

Nested Class Summary

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

Mapper.Context

Constructor Summary

Constructors

Constructor and Description
BaileyBorweinPlouffe.BbpMapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	map(LongWritable offset, IntWritable length, Mapper.Context context) Compute the (offset+1)th to (offset+length)th digits.

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

BaileyBorweinPlouffe.BbpMapper

public BaileyBorweinPlouffe.BbpMapper()

Method Detail

map

protected void map(LongWritable offset,
       IntWritable length,
       Mapper.Context context)
            throws IOException,
                   InterruptedException

Compute the (offset+1)th to (offset+length)th digits.

Overrides:

map in class Mapper<LongWritable,IntWritable,LongWritable,BytesWritable>

Throws:

IOException

InterruptedException