| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Robert Haas <robertmhaas(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Michael Banck <michael(dot)banck(at)credativ(dot)de>, Greg Stark <stark(at)mit(dot)edu>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Online enabling of checksums |
| Date: | 2018-08-01 16:55:07 |
| Message-ID: | 20180801165507.nv2drxgy6ztnl4sy@alap3.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Hi,
On 2018-08-01 12:45:27 -0400, Bruce Momjian wrote:
> On Wed, Aug 1, 2018 at 09:39:43AM -0700, Andres Freund wrote:
> > On 2018-08-01 12:36:13 -0400, Bruce Momjian wrote:
> > > This patchset is weird because it is perhaps our first case of trying to
> > > change the state of the server while it is running. We just don't have
> > > an established protocol for how to orchestrate that, so we are limping
> > > along toward a solution.
> >
> > There's a number of GUCs that do this? Even in related areas,
> > cf. full_page_writes.
>
> How is that taking the server from one state to the next in a
> non-instantaneous way?
Because it requires coordination around checkpoints, it can only really
fully take effect after the start of a checkpoint. And it even both has
primary and replica differences...
Greetings,
Andres Freund
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Kefan Yang | 2018-08-01 17:05:35 | RE: GSOC 2018 Project - A New Sorting Routine |
| Previous Message | Bruce Momjian | 2018-08-01 16:45:27 | Re: Online enabling of checksums |