org.apache.hadoop.examples

类 AggregateWordCount

java.lang.Object

org.apache.hadoop.examples.AggregateWordCount

public class AggregateWordCount
extends Object

This is an example Aggregated Hadoop Map/Reduce application. It reads the text input files, breaks each line into words and counts them. The output is a locally sorted list of words and the count of how often they occurred. To run: bin/hadoop jar hadoop-examples-*.jar aggregatewordcount in-dir out-dir numOfReducers textinputformat

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	AggregateWordCount.WordCountPlugInClass

构造器概要

构造器

构造器和说明
AggregateWordCount()

方法概要

方法

限定符和类型	方法和说明
static void	main(String[] args) The main driver for word count map/reduce program.

从类继承的方法 java.lang.Object

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

构造器详细资料

AggregateWordCount

public AggregateWordCount()

方法详细资料

main

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

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

抛出:

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