On Wed, Jul 17, 2019 at 11:21:06PM +0200, Laurenz Albe wrote:
> Ok, here's another attempt:
>
> Note that while WAL will be flushed with this setting,
> <application>pg_receivewal</application> never applies it, so
> <xref linkend="guc-synchronous-commit"/> must not be set to
> <literal>remote_apply</literal> if <application>pg_receivewal</application>
> is the only synchronous standby.
> Similarly, it is no use adding <application>pg_receivewal</application> to a
> priority-based (<literal>FIRST</literal>) or a quorum-based
> (<literal>ANY</literal>) synchronous replication setup if
> <xref linkend="guc-synchronous-commit"/> is set to <literal>remote_apply</literal>.
Or more simply like that?
"Note that while WAL will be flushed with this setting,
pg_receivewal never applies it, so synchronous_commit must not be set
to remote_apply if pg_receivewal is a synchronous standby, be it a
member of a priority-based (FIRST) or a quorum-based (ANY) synchronous
replication setup."
--
Michael
