Audits are not being generated for Hive "Alter table add constraint" commands

Audits are not being generated for Hive "Alter table add constraint" commands.
But audits are being generated for other "Alter table" commands.

Steps to reproduce :-

1. Create a policy in Hadoop SQL repo for hrt_qa user:-
   database-*, table - *, column - *, and allow all access to hrt_qa user.
2. In beeline, run the following commands

Drop table if exists hr;
Create table hr(c0 int);
ALTER TABLE hr SET TBLPROPERTIES ('notes'="Please don't drop this table.");
ALTER TABLE hr ADD CONSTRAINT unique_key_const UNIQUE (c0) DISABLE NOVALIDATE;

In Ranger Admin, audits are generated for the first 3 commands, but audits are not generated for the fourth command.