Comment 1 for bug 1988421

These two items were added to the DB code for different reasons - one for correctness (constraint), the other for performance (index). They were done some time ago (8 years, Kilo-ish cycle) so I'm a little weary at changing things without having someone take a closer look.

Do you have a log of the Warning being emitted for this table? I didn't see anything in a new devstack install.