Re: [PATCH] Expose checkpoint reason to completion log messages.

Hi all,

On Tue, Feb 17, 2026 at 11:25 AM Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
>
> On Wed, Jan 14, 2026 at 7:11 PM Soumya S Murali
> <soumyamurali(dot)work(at)gmail(dot)com> wrote:
> > Thank you for the detailed review and suggestions.
> > Based on the feedback, I have updated the patch to make the checkpoint
> > and restart point log formatting fully consistent between start and
> > completion log messages. The completion messages now use the same
> > format as the start messages without parentheses. I have also replaced
> > the term "reason" with the term "flags". The patch has been rebuilt
> > and validated with make check and the full recovery TAP test suite,
> > and I have manually verified the resulting log output to confirm the
> > expected formatting. I am attaching the updated patch for further
> > review. Please let me know if any additional adjustments are needed.
>
> Thanks for updating the patch!
>
> + if (flags & CHECKPOINT_IS_SHUTDOWN)
> + APPEND_REASON("shutdown");
> + if (flags & CHECKPOINT_END_OF_RECOVERY)
> + APPEND_REASON("end-of-recovery");
>
> I still think it would be simpler to construct the checkpoint flags string
> with snprintf() rather than introducing a new macro. Please see
> the attached patch.
>
> - if ($node_primary->log_contains("checkpoint complete: ", $logstart))
> + if ($node_primary->log_contains("checkpoint complete:", $logstart))
>
> I don't think this change is necessary.
>
> I've also updated the commit message in the attached patch.

Thank you very much for refining the implementation and simplifying
the flag construction logic using snprintf(). I have reviewed the
committed changes and verified that the formatting and behavior are
consistent and correct. The updated approach is clear and aligns well
with PostgreSQL coding style. I also appreciate the improvements made
to the commit message as it clearly explains the motivation and makes
the change easy to understand in context.
I sincerely appreciate your guidance throughout this review process.

Regards,
Soumya