Re: Parallel heap vacuum

On Fri, Apr 4, 2025 at 5:35 PM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>
> > I haven't looked closely at this version but I did notice that you do
> > not document that parallel vacuum disables eager scanning. Imagine you
> > are a user who has set the eager freeze related table storage option
> > (vacuum_max_eager_freeze_failure_rate) and you schedule a regular
> > parallel vacuum. Now that table storage option does nothing.
>
> Good point. That restriction should be mentioned in the documentation.
> I'll update the patch.

Yea, I mean, to be honest, when I initially replied to the thread
saying I thought temporarily disabling eager scanning for parallel
heap vacuuming was viable, I hadn't looked at the patch yet and
thought that there was a separate way to enable the new parallel heap
vacuum (separate from the parallel option for the existing parallel
index vacuuming). I don't like that this disables functionality that
worked when I pushed the eager scanning feature.

- Melanie