linux中安装hadoop、JDK_linux的hadoop的搭建jdk

大数据的四个V特征
1.volume //体量大
2.variety //样式多.
3.velocity //速度快
4.valueless //价值密度低
hadoop四个模块
1.common
2.hdfs
3.hadoop yarn
4.hadooop mapreduce(mr)
1.安装jdk
(1)下载jdk-8u65-linux-x64.tar.gz
(2)tar开

$>su root; cd ~
$>mkdir downloads
$>cp /mnt/hdfs/downloads/bigdata/jdk-8u65-linux-x64.tar.gz ~/downlooads
$>tar -xzvf jdk-8u65-linux-x64.tar.gz
1
2
3
4

(3)创建/soft文件夹

$>sudo mkdir /soft
$>sudo chown centos:centos /soft
1
2

(4)移动tar开的文件到/soft下

$>mv ~/downloads/jdk-1.8.0_65