Re: [HACKERS] why not parallel seq scan for slow functions

On Fri, Nov 10, 2017 at 4:42 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> On Thu, Nov 9, 2017 at 3:47 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
>> I think I understood your concern after some offlist discussion and it
>> is primarily due to the inheritance related check which can skip the
>> generation of gather paths when it shouldn't.  So what might fit
>> better here is a straight check on the number of base rels such that
>> allow generating gather path in set_rel_pathlist, if there are
>> multiple baserels involved.  I have used all_baserels which I think
>> will work better for this purpose.
>
> Yes, that looks a lot more likely to be correct.
>
> Let's see what Tom thinks.

Moved to next CF for extra reviews.
-- 
Michael