On Mon, Mar 28, 2022 at 12:12:48PM +0900, Michael Paquier wrote:
> It seems to me here that the snapshot hold by autovacuum during the
> scan of pg_database to find the relations to process is enough to
> prevent the FSM truncation, as the tuples cleaned up by the DELETE
> query still need to be visible. One simple way to keep this test
> would be a custom configuration file with autovacuum disabled and
> NO_INSTALLCHECK.
Well, done this way. We already do that in other tests that rely on a
FSM truncation to happen, like 008_fsm_truncation.pl.
--
Michael