> > > > I suspect that this is a *really* bad idea. It's very very hard to get > inplace > updates right. We have several unfixed correctness bugs that are related to > the use of inplace updates. I really don't think it's wise to add > additional > interfaces that can reach inplace updates unless there's really no other > alternative (like not being able to assign an xid in VACUUM to be able to > deal > with anti-xid-wraparound-shutdown systems).
In this case, the alternative is an immediate doubling of the size of pg_class right after a restore/upgrade.
