How do you create a user with modify permissions in Hadoop / HDFS?
Also please refer to the following link if you want to know about 'super-user' and 'dfs.permissions.superusergroup' : https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsPermissionsGuide.html#The...
All Service accounts i.e. hive, hdfs, mapred etc. are kind of password-less with auto generated and auto changed hash passwords i.e. managed accounts. You can login to these users from a sudo user account or as root user by doing "su - hive" or "sudo su - hive" and so on based on root or sudo user account.
[root@sandbox ~]# su - hive [hive@sandbox ~]$ [hive@sandbox ~]$ whoami hive
You can login to these users from a sudo user account or as root user by doing "su - hive" or "sudo su - hive"