Re: Add REPACK progress phases for logical decoding setup

From: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
To: Sami Imseih <samimseih(dot)pg(at)gmail(dot)com>
Cc: Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Add REPACK progress phases for logical decoding setup
Date: 2026-11-04 21:51:08
Message-ID: CAD21AoAFpgnp22C2dx_5vJKzdS3g8S+2b0aD_CaqzEO+tfDjTA@mail.gmail.com
Views: Whole Thread | Raw Message | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Fri, Oct 30, 2026 at 2:57 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>
> On Wed, Oct 28, 2026 at 3:13 PM Sami Imseih <samimseih(dot)pg(at)gmail(dot)com> wrote:
> >
> > > I've reviewed the patch and it mostly looks good to me. I have one
> > > minor comment:
> > >
> > > /* Find our decoding starting point. */
> > > + set_repack_worker_setup_phase(shared,
> > > + PROGRESS_REPACK_PHASE_INIT_LOGICAL_DECODING);
> > > DecodingContextFindStartpoint(ctx);
> > >
> > > While it's true that DecodingContextFindStartpoint() is the call that
> > > can take a long time in this phase, I'd recommend setting the
> > > INIT_LOGICAL_DECODING phase just before calling
> > > CreateInitDecodingContext(). Otherwise, if CreateInitDecodingContext()
> > > takes time for some reason, it would be reported as "enabling logical
> > > decoding", which the documentation describes as having nothing to do
> > > when effective_wal_level is already logical.
> >
> > Makes sense. Done in v5
>
> Thank you for updating the patch! It looks good to me, so I'll push it
> early next week, barring objections.

Sorry for the late notice. I pushed this patch on Monday (51ae21aa31).

Regards,

--
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Manu 2026-11-04 21:55:10 Re: O(N^3) planning time in choose_plan_name() since 8c49a484e8e
Previous Message Bharath Rupireddy 2026-11-04 21:45:35 Re: Show effective xmin in pg_replication_slots when xmin is not set