使用方法:hadoop fs -chgrp [-R] GROUP URI [URI …] Change group association of
files. With -R, make the change recursively through the directory
structure. The user must be the owner of files, or else a super-user.
Additional information is in the Permissions User
Guide. –>
改变文件所属的组。使用-R将使改变在目录结构下递归进行。命令的使用者必须是文件的所有者或者超级用户。更多的信息请参见HDFS权限用户指南。