Re: Possible bug in logical replication.

On Thu, May 17, 2018 at 12:31:09PM +0300, Konstantin Knizhnik wrote:
> I wonder who is now maintaining logical replication stuff and whether this
> bug is going to be fixed?

I haven't looked at your problem in details so I cannot give a sure
conclusion, but when it comes to pg_replication_slot_advance, which is
new as of v11, you need to look at this commit:
commit: 9c7d06d60680c7f00d931233873dee81fdb311c6
author: Simon Riggs <simon(at)2ndQuadrant(dot)com>
date: Wed, 17 Jan 2018 11:38:34 +0000
Ability to advance replication slots

Ability to advance both physical and logical replication slots using a
new user function pg_replication_slot_advance().

For logical advance that means records are consumed as fast as possible
and changes are not given to output plugin for sending. Makes 2nd phase
(after we reached SNAPBUILD_FULL_SNAPSHOT) of replication slot creation
faster, especially when there are big transactions as the reorder buffer
does not have to deal with data changes and does not have to spill to
disk.

Author: Petr Jelinek
Reviewed-by: Simon Riggs

I am adding an open item.
--
Michael