edu.umd.cloud9.example.simple
Class DemoWordCount

java.lang.Object
  org.apache.hadoop.conf.Configured
      edu.umd.cloud9.example.simple.DemoWordCount

All Implemented Interfaces:

Configurable, Tool

public class DemoWordCount
extends Configured
implements Tool

Simple word count demo. This Hadoop Tool counts words in flat text file, and takes the following command-line arguments:

• [input-path] input path
• [output-path] output path
• [num-reducers] number of reducers

Author:

Jimmy Lin

Constructor Summary

DemoWordCount()
Creates an instance of this tool.

Method Summary

static void	main(String[] args) Dispatches command-line arguments to the tool via the ToolRunner.
int	run(String[] args) Runs this tool.

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

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

DemoWordCount

public DemoWordCount()

Creates an instance of this tool.

Method Detail

run

public int run(String[] args)
        throws Exception

Runs this tool.

Specified by:

run in interface Tool

Throws:

Exception

main

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

Dispatches command-line arguments to the tool via the ToolRunner.

Throws:

Exception