окт. 2023 г. в 21:06, Tom Lane :
> Smolkin Grigory writes:
> > We are running PG13.10 and recently we have encountered what appears to
> be
> > a bug due to some race condition between ALTER TABLE ... ADD CONSTRAINT
> and
> > some other catalog-writer, possibly ANALYZE.
&g
> This is going to be a problem with any operation that does a transactional
> pg_class update without taking a lock that conflicts with ShareLock.
GRANT
> doesn't lock the table at all, so I can reproduce this in v17 as follows:
>
> == session 1
> create table t (c int);
> begin;
> grant select on
