11、Hadoop框架MapReduce的WordCount编写

Hadoop框架MapReduce的WordCount编写

导入依赖

<!-- https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-mapreduce-client-core -->
	<dependency>
		<groupId>org.apache.hadoop</groupId>
		<artifactId>hadoop-mapreduce-client-core</artifactId>
		<version>2.7.6</version>
	</dependency>

<!-- https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-common -->
	<dependency>
		<groupId>org.apache.hadoop</groupId>
		<artifactId>hadoop-common</artifactId>
		<version>2.7.6</version>
	</dependency>

创建MapReduce包和Demo01_WordCount类

package com.shujia.MapReduce;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.ap