org.apache.hadoop.examples
Class Sort<K,V>

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.hadoop.examples.Sort<K,V>

All Implemented Interfaces:

Configurable, Tool

public class Sort<K,V>
extends Configured
implements Tool

This is the trivial map/reduce program that does absolutely nothing other than use the framework to fragment and sort the input values. To run: bin/hadoop jar build/hadoop-examples.jar sort [-m maps] [-r reduces] [-inFormat input format class] [-outFormat output format class] [-outKey output key class] [-outValue output value class] [-totalOrder pcnt num samples max splits] in-dir out-dir

Constructor Summary

Sort()

Method Summary

RunningJob	getResult() Get the last job that was run using this instance.
static void	main(String[] args)
int	run(String[] args) The main driver for sort program.

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

Sort

public Sort()

Method Detail

run

public int run(String[] args)
        throws Exception

The main driver for sort program. Invoke this method to submit the map/reduce job.

Specified by:

run in interface Tool

Parameters:

args - command specific arguments.

Returns:

exit code.

Throws:

IOException - When there is communication problems with the job tracker.

Exception

main

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

Throws:

Exception

getResult

public RunningJob getResult()

Get the last job that was run using this instance.

Returns:

the results of the last job that was run