• Hadoop下载

  wget http://mirrors.axint.net/apache//hadoop/core/hadoop-0.20.2/hadoop-0.20.2.tar.gz

• 解压

tar –zvxf hadoop-0.20.2.tar.gz

• 把Hadoop 的安装路径添加到环/etc/profile 中

export HADOOP_HOME=/home/sj/hadoop-0.20.2

export PATH=$HADOOP_HOME/bin:$PATH

• 配置Hadoop