https://www.cnblogs.com/HusterX/p/14125543.html
环境声明：
1. Hadoop 2.7.0
2 Java 1.8.0
3. window10
4. Vmware workstation pro 16
5. centos7
window上hadoop的安装：
1. 将hadoop.tar.gz文件解压
2. 将 "hadoop安装路径"\bin 添加到PATH路径中
3. 将hadoop.dll文件放到 C:\Windows\System32 目录下，将winutils.exe文件到 "hadoop安装路径"\bin 目录下
PS: 要下载对应版本的 hadoop.dll 和 winutils.exe （如果没有，尽量用高于自己版本的文件）具体文件在github上找。
更改window系统上的hosts文件
路径：C:\Windows\System32\drivers\etc\hosts
1 # Copyright (c) 1993-2009 Microsoft Corp. 2 # 3 # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. 4 # 5 # This file contains the mappings of IP addresses to host names. Each 6 # entry should be kept on an individual line. The IP address should 7 # be placed in the first column followed by the corresponding host name. 8 # The IP address and the host name should be separated by at least one 9 # space. 10 # 11 # Additionally, comments (such as these) may be inserted on individual 12 # lines or following the machine name denoted by a '#' symbol. 13 # 14 # For example: 15 # 16 # 102.54.94.97 rhino.acme.com # source server 17 # 38.25.63.10 x.acme.com # x client host 18 19 # localhost name resolution is handled within DNS itself. 20 # 127.0.0.1 localhost 21 # ::1 localhost 22 127.0.0.1 activate.navicat.com 23 # 下边三个是虚拟机中的IP地址和hostname 24 192.168.47.131 master 25 192.168.47.132 slave1 26 192.168.47.130 slave2