Re: Explain buffers wrong counter with parallel plans

Поиск
Список
Период
Сортировка
От Robert Haas
Тема Re: Explain buffers wrong counter with parallel plans
Дата
Msg-id CA+TgmoaK-xSRXRo=6W9UTshcGXOM78Y4NoKESxVeYo+8nL46kg@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Explain buffers wrong counter with parallel plans  (Amit Kapila <amit.kapila16@gmail.com>)
Ответы Re: Explain buffers wrong counter with parallel plans
Список pgsql-hackers
On Fri, Jul 6, 2018 at 9:44 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> I have tried this idea, but it doesn't completely solve the problem.
> The problem is that nodes below LIMIT won't get a chance to accumulate
> the stats as they won't be able to call InstrStopNode.

I'm not sure I understand.  Why not?  I see that we'd need to insert
an extra call to InstrStopNode() if we were stopping the node while it
was running, because then InstrStartNode() would have already been
done, but the corresponding call to InstrStopNode() would not have
been done.  But I'm not sure how that would happen in this case.  Can
you explain further?

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


В списке pgsql-hackers по дате отправления:

Предыдущее
От: "Joshua D. Drake"
Дата:
Сообщение: Re: shared-memory based stats collector
Следующее
От: Dave Cramer
Дата:
Сообщение: Re: pg_recvlogical use of SIGHUP