Ranger
When running on CDP, it is not required, but you can specify a ranger user and its password with ADMIN role.
This is only used by the Initialize service dirs and policies command to create required default policies in Ranger.
If this is not set, you will have to create required policies by yourself.
N.B.: If you generate data to some other paths/databases/topics than default ones of datagen, you will need to grant privileges for user datagen, unless you specified another user