Re: Can can I make an injection point wait occur no more than once?

On Thu, Jul 10, 2025 at 06:58:58PM -0400, Peter Geoghegan wrote:
> On Wed, Jul 9, 2025 at 10:24 PM Noah Misch <noah@leadboat.com> wrote:
> > Looking at .cirrus.tasks.yml, I bet the key factor is that CI task using
> > debug_parallel_query=regress.  I bet the leader is attached to the injection
> > point, but the WARNING is reached in a parallel worker.
>
> Yep, that was it.

Catching up on things a bit.  Cool to see that you have found out the
origin of the problem.

> At some point I'll start a new thread with a formal patch proposal,
> that'll include the tests on this thread. I also plan on using
> injection points to write a simple/serial regression test exercising
> the nbtree code that completes an incomplete split (following a hard
> crash/error).

It sounds to me that an ERROR in an SQL and/or isolation test would be
enough.  If you are looking at some replay cases, a TAP test would be
the way to go.
--
Michael