Hadoop2.6.0单机模式搭建

1、下载安装jdk

下载jdk1.6.0_39_x64.bin

./jdk1.6.0_39_x64.bin 执行文件

2、配置环境变量

vim /etc/profile

追加：

export JAVA_HOME=/root/hadoop/jdk1.6.0_39
export CLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export PATH=$PATH:$JAVA_HOME/bin

让环境变量生效

source /etc/profile 

java -version 查看jdk版本

3、下载hadoop安装包

wget http://mirror.bit.edu.cn/apache/hadoop/common/stable2/hadoop-2.6.0.tar.gz

解压： 

tar -zxvf hadoop-2.6.0.tar.gz

4、 mkdir input 在/root/hadoop下创建input目录

新建文本文件

5、在/root/hadoop/hadoop-2.6.0目录下执行

bin

[root@map hadoop-2.6.0]# bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0.jar wordcount /root/hadoop/input /root/hadoop/output

/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0.jar wordcount /root/hadoop/input /root/hadoop/output

[root@map hadoop-2.6.0]# bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0.jar wordcount /root/hadoop/input /root/hadoop/output

[root@map hadoop-2.6.0]# cat ../input/*
hello
hello
lou
lou
lou
nihao
nihao
loulou
[root@map hadoop-2.6.0]# cat ../output/*
hello   2
lou     3
loulou  1
nihao   2

6、单机模式搭建成功