| From: | Rafia Sabih <rafia(dot)pghackers(at)gmail(dot)com> |
|---|---|
| To: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: How to prohibit parallel scan through tableam? |
| Date: | 2019-11-28 13:23:21 |
| Message-ID: | CA+FpmFf+PVYz4t1U1iKxEbRhZtGV+FfgSx2TTnkNWrn43wvaMg@mail.gmail.com |
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| Lists: | pgsql-hackers |
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)?
>
> One moment, isn't that parallel scans are already restricted for temp
tables, or I have misunderstood something here...?
--
Regards,
Rafia Sabih
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