Andreas Seltenreich <seltenreich(at)gmx(dot)de> writes:
> I see the above ERROR logged a lot when testing master at eef8c0069e
> with a postgres_fdw around. Below is a recipe to reproduce it on top of
> the regression DB.
I've pushed a fix that should get you past that problem, although
I suspect we still have some issues with treatment of parallel-unsafe
subplans.
regards, tom lane