Re: walsender waiting_for_ping spuriously set

On 2020-Aug-07, Alvaro Herrera wrote:

> I'm thinking in keeping the sentences that were added in that commit,
> maybe like so:
> 
> >           * We only send regular messages to the client for full decoded
> >           * transactions, but a synchronous replication and walsender shutdown
> >           * possibly are waiting for a later location. So, before sleeping, we
> > +         * send a ping containing the flush location. A reply from standby is
> > +         * not needed and would be wasteful most of the time,
> > +         * but if the receiver is otherwise idle and walreceiver status messages
> > +         * are enabled, this keepalive will trigger a reply.  Processing the
> > +         * reply will update these MyWalSnd locations.

After rereading this a few more times, I think it's OK as Noah had it,
so I'll just use his wording.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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