Ranger should allow for "Show Columns" and "describe" on tables where user access is limited to a subset of columns.

If you create a Hive policy in Ranger which allows only a subset of columns in a table, users are unable to "select * from tablename" or "describe tablename". The user must know in advance to which columns they are allowed access, but they can't use "describe" to see a list of columns they are allowed.

When doing either select or describe in Hive, Ranger should dynamically filter the columns the user is not allowed to see.