On 2018-07-04 17:02:01 -0400, Alvaro Herrera wrote:
> On 2018-Jul-04, Andres Freund wrote:
>
> > > I think the soonest this can work is to add the column in pg12 so that
> > > it can be used to upgrade to pg13.
> >
> > I don't think we can easily require that everyone pg_upgrading to v13+
> > upgrades to v12 first?
>
> We've never done that, I don't know if we can get away with it.
> Upgrades with pg_upgrade are not cheap enough for that, methinks.
> Maybe I'm wrong, but people complain even at a *single* pg_upgrade --
> seems everybody wants in-place upgrades nowadays ...
Right. That's why I was wondering about making the "last full scan"
feature backpatchable...
Greetings,
Andres Freund