On Wed, 27 Nov 2019 at 12:33, Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>
wrote:
> Hi hackers,
>
> I wonder how it is possible to prohibit parallel scan for the external
> storage accessed through tableam?
> For example if I want to implement specialized tableam for fast access
> to temp tables, how can I inform optimizer that
> parallel scan is not possible (because table data is local to the backend)?
>
> How about setting parallel_setup_cost to disable_cost in costsize.c for
your specific scan method.
--
Regards,
Rafia Sabih