Re: [PG19][PATCH] Make postgres_fdw statistics import atomic

On Fri, Sep 18, 2026 at 12:35 AM Nikolay Samokhvalov <nik(at)postgres(dot)ai> wrote:
> On Thu, Sep 17, 2026, Etsuro Fujita <etsuro(dot)fujita(at)gmail(dot)com> wrote:
> > * You imported remote stats without re-analyzing the remote table
> > after the delete operation, but that isn't supported, as noted in the
> > documentation; "When using this option, it is the user's
> > responsibility to ensure that the existing statistics for the remote
> > table are up-to-date."
>
> Thanks Etsuro. Agreed, my reproducer violates that requirement.
> I haven't reproduced this with matching types and current remote
> stats, so I'll withdraw the patch for now.
>
> Attribute stats can still affect join estimates when reltuples=0;
> I tested that. But that doesn't show this needs fixing.

Ok, I will move this open item to Non-bugs if no objections.

Thanks for checking!

Best regards,
Etsuro Fujita