Re: Implement waiting for wal lsn replay: reloaded

On Tue, May 26, 2026 at 9:48 AM Xuneng Zhou <xunengzhou(at)gmail(dot)com> wrote:
>
> On Mon, May 25, 2026 at 5:00 PM Alexander Korotkov <aekorotkov(at)gmail(dot)com> wrote:
> >
> > On Sat, May 23, 2026 at 9:40 PM Xuneng Zhou <xunengzhou(at)gmail(dot)com> wrote:
> > >> > I agree with you. But do we actually need a
> > >> > wait_for_standby_and_slot_catchup() wrapper. I think we can call
> > >> > $node->wait_for_slot_catchup() directly and simplify the fix. Check
> > >> > the attached patch.
> > >> >
> > >>
> > >> The patch looks good to me. I agree that the wait_for_slot_catchup is
> > >> not needed and could be misleading. This change would make the exact
> > >> synchronization point and its intention clearer. The only price we
> > >> need to pay here is bringing back the polling. But it seems acceptable
> > >> since the cost was there in the pre-wait-for-lsn era. And thanks for
> > >> writing the great commit message!
> > >
> > >
> > > Sorry for copy-pasting the wrong function name. It should be wait_for_catchup().
> >
> > Good, thank you. I'll push it if no objections.
>
> While reading 019_replslot_limit.pl, Codex pointed out a few
> inconsistencies in the comments. I verified them and they look real.
> Would you mind doing a small cleanup as well?

I updated the comment above wait_for_slot_catchup to reflect its usage.

--
Regards,
Xuneng Zhou
HighGo Software Co., Ltd.