On Tue, Jul 9, 2019 at 7:47 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > Back when get_actual_variable_range() used a dirty snapshot, it would
> > have not seen any NULL value with this test case, because the root of
> > the HOT chain would be considered recently dead.
>
> Hm. So maybe we need to teach it to ignore tuples that are not the tips
> of their HOT chains?
An approach like that was the first thing that I thought of, but I'll
have to study the problem some more before coming up with a firm
opinion.
--
Peter Geoghegan
