Re: Fix stats reporting delays in logical parallel apply worker - Mailing list pgsql-hackers

On Fri, Apr 17, 2026 at 12:49 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Fri, Apr 17, 2026 at 8:31 AM Zhijie Hou (Fujitsu)
> <houzj.fnst@fujitsu.com> wrote:
> >
> > When implementing another feature, I noticed that parallel apply workers
> > currently do not report statistics while idle in their main loop. This can cause
> > stats from the last processed transaction to be arbitrarily delayed, especially
> > when there are long gaps between streamed transactions.
> >
> > The issue is demonstrated in 0002, where a TAP test fails when attempting to
> > collect stats from a parallel apply worker that has no subsequent transaction to
> > trigger a stats report.
> >
> > 0001 fixes this issue by forcing a stats report when the worker is idle in the
> > main loop, matching the behavior already present in LogicalRepApplyLoop() for
> > regular logical apply workers.
> >
>
> LGTM. We should backpatch this change.
>

Pushed now.

--
With Regards,
Amit Kapila.