[IMPALA-9771] Remove authorization roles functionality

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: Impala 4.0.0
• Fix Version/s: Not Applicable
• Component/s: Frontend
• Epic Link: sentry-removal
• Target Version: Impala 4.0.0
• Epic Color: ghx-label-4
• Assignee: Unassigned
• Reporter: Joe McDonnell
• Created: 20/May/20 20:49
• Updated: 23/Dec/20 19:36
• Resolved: 23/Dec/20 19:36

Description

There are several DDL statements that are specific to Sentry and only throw an error for Ranger. Specifically, the following:

show roles;
show current roles;
create role foo;
drop role foo;
grant select ... to role foo;
revoke select .. from role foo;
show grant role foo;
show role grant group foo;

This is tested in authorization/test_ranger.py::TestRanger::test_unsupported_sql()

https://github.com/apache/impala/blob/master/tests/authorization/test_ranger.py#L727-L744

These can be removed now that Sentry support has been removed.