[大数据]刷新环境变量

刷新环境变量 source/etc/ profile?并使用 hadoop version验证是否安装成功
hadoop version
root@master hadoop]# hadoop version Hadoop 2.7. 3 Subversion https / / git - wip - us . apache . org / repos / ast / hadoop . git - r baa 9 1 f 7 c 6 bc 9 cb 9 2 be 5 9 82de4719c1c8af9lccff Compiled yy root on 201(6-08-18T01:41Z Compiled With protoc 2.5.0 From source with checksum 2e4ce5f957ea4db193bce3734ff29ff4 This command was run using /usr/Local/hadoop/share/hadoop/common/hadoop-common-2 7 3 [rootmaster hadoop]#