Re: Newly created replication slot may be invalidated by checkpoint

On Mon, Dec 8, 2025 at 12:53 PM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>
> On Fri, Dec 5, 2025 at 4:10 AM Amit Kapila <amit.kapila16@gmail.com> wrote:
> >
> > On Thu, Dec 4, 2025 at 12:12 PM Zhijie Hou (Fujitsu)
> > <houzj.fnst@fujitsu.com> wrote:
> > >
> > > Here are the updated patches for HEAD and 18. I did not add tests since, after
> > > applying the patch and resolving the issue, the only observable behavior is that
> > > the checkpoint will wait for another backend to create a slot due to the lwlock
> > > lock, so it seems not worth to test solely lwlock wait event (I could not find similar
> > > tests).
> > >
> >
> > Fair enough. The patch looks mostly good to me, attached are minor
> > comment improvements atop the HEAD patch. I'll do some more testing
> > before push.
> >
> > Sawada-san/Vitaly, do you have any opinion on patch or the direction
> > to fix? The idea is to get this fixed for HEAD and 18, then continue
> > discussion for other bank-branches and the remaining patches.
>
> +1
>

Thanks, Pushed. I'll continue thinking on how to fix it in branches
prior to 18 and other problems reported in this thread.

--
With Regards,
Amit Kapila.