| From: | Jaime Casanova <jaime(at)2ndquadrant(dot)com> |
|---|---|
| To: | Josh Berkus <josh(at)agliodbs(dot)com> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Claudio Freire <klaussfreire(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Minmax indexes |
| Date: | 2014-07-10 21:30:32 |
| Message-ID: | CAJKUy5hUVMz2ZxuzRN9M45nAJ6fX=nPu4pGz4oMNKn-O9W7j-w@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Thu, Jul 10, 2014 at 3:50 PM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
> On 07/10/2014 12:20 PM, Alvaro Herrera wrote:
>>> So I guess the only thing left is to issue a NOTICE when said alter
>>> > takes place (I don't see that on the patch, but maybe it's there?)
>> That's not in the patch. I don't think we have an appropriate place to
>> emit such a notice.
>
> What do you mean by "don't have an appropriate place"?
>
> The suggestion is that when a user does:
>
> ALTER INDEX foo_minmax SET PAGES_PER_RANGE=100
>
> they should get a NOTICE:
>
> "NOTICE: changes to pages per range will not take effect until the index
> is REINDEXed"
>
> otherwise, we're going to get a lot of "I Altered the pages per range,
> but performance didn't change" emails.
>
How is this different from "ALTER TABLE foo SET (FILLFACTOR=80); " or
from "ALTER TABLE foo ALTER bar SET STORAGE EXTERNAL; " ?
we don't get a notice for these cases either
--
Jaime Casanova www.2ndQuadrant.com
Professional PostgreSQL: Soporte 24x7 y capacitación
Phone: +593 4 5107566 Cell: +593 987171157
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Josh Berkus | 2014-07-10 21:50:06 | Re: Minmax indexes |
| Previous Message | Alvaro Herrera | 2014-07-10 21:29:34 | Re: Minmax indexes |