Re: pg_receivewal documentation

On Thu, 25 Jul 2019 16:58:17 +0900
Michael Paquier <michael(at)paquier(dot)xyz> wrote:

> On Wed, Jul 24, 2019 at 03:03:04PM +0200, Jehan-Guillaume de Rorthais wrote:
> > Unless I am missing something, another solution might be to use a dedicated
> > role to pg_receive{xlog|wal} with synchronous_commit lower than
> > remote_apply.
>
> Aren't you confused by the same thing as I was upthread [1]?
> [1]: https://www.postgresql.org/message-id/20190710080423.GG1031@paquier.xyz
>
> remote_apply affects all sessions. So even if you use a replication
> role with synchronous_commit = on and have pg_receivewal use that with
> remote_apply set in postgresql.conf, then remote_apply is effective
> for all the other sessions so these will still be stuck at commit
> waiting for pg_receivewal to apply WAL if it is a synchronous
> standby.

Argh!

(Sorry for the noise)