On Fri, Sep 30, 2022 at 2:56 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > FWIW it seems possible that the Postgres 15 vacuumlazy.c work that
> > added lazy_scan_noprune() made this scenario more likely in practice
> > -- even compared to Postgres 14.
>
> Could be, because we haven't seen field reports of this in v14 yet.
I would be more confident here were it not for the recent
heap_delete() issue reported by one of my AWS colleagues (and fixed by
another, Jeff Davis). See commit 163b0993 if you missed it before now.
> And there's still no hard evidence of a bug pre-14. Nonetheless,
> I'm inclined to backpatch to v12 as 34f581c39 was.
+1
--
Peter Geoghegan