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
