Re: [PATCH] Add TOAST support for several system tables

On 2022-02-28 18:08:48 -0500, Tom Lane wrote:
> =?UTF-8?B?U29maWEgS29waWtvdmE=?= <s.kopikova@postgrespro.ru> writes:
> > ACL lists in tables may potentially be large in size. I suggest adding TOAST support for system tables, namely
pg_class,pg_attribute and pg_largeobject_metadata, for they include ACL columns.
 
> 
> TBH, the idea of adding a toast table to pg_class scares the daylights
> out of me.  I do not for one minute believe that you've fixed every
> problem that will cause, nor do I think "allow wider ACLs" is a
> compelling enough reason to take the risk.
> 
> I wonder if it'd be practical to move the ACLs for relations
> and attributes into some new table, indexed like pg_depend or
> pg_description, so that we could dodge that whole problem.
> pg_attrdef is a prototype for how this could work.
> 
> (Obviously, once we had such a table the ACLs for other things
> could be put in it, but I'm not sure that the ensuing breakage
> would be justified for other sorts of objects.)

As there has been no progress since this email, I'm marking this CF entry as
returned with feedback for now.

- Andres