org.apache.hadoop.examples
Class PiEstimator

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.hadoop.examples.PiEstimator

All Implemented Interfaces:

Configurable, Tool

public class PiEstimator
extends Configured
implements Tool

A Map-reduce program to estimaate the valu eof Pi using monte-carlo method.

Nested Class Summary

static class	PiEstimator.PiMapper Mappper class for Pi estimation.
static class	PiEstimator.PiReducer

Constructor Summary

PiEstimator()

Method Summary

static void	main(String[] argv)
int	run(String[] args) Launches all the tasks in order.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

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.conf.Configurable

getConf, setConf

Constructor Detail

PiEstimator

public PiEstimator()

Method Detail

run

public int run(String[] args)
        throws Exception

Launches all the tasks in order.

Specified by:

run in interface Tool

Parameters:

args - command specific arguments.

Returns:

exit code.

Throws:

Exception

main

public static void main(String[] argv)
                 throws Exception

Throws:

Exception