On 27.11.2019 15:12, Rafia Sabih wrote:
On Wed, 27 Nov 2019 at 12:33, Konstantin Knizhnik <k.knizh...@postgrespro.ru <mailto:k.knizh...@postgrespro.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.
How can I do it if i just implementing my AM and not going to change any postgres code?
-- Konstantin Knizhnik Postgres Professional: http://www.postgrespro.com The Russian Postgres Company
