On Fri, Jul 20, 2018 at 10:13:58AM +0900, Masahiko Sawada wrote:
> Also, I'm not sure it's a good way to show the distance as LSN. LSN is
> a monotone increasing value but in your patch, a value of the "remain"
> column can get decreased.
If that can happen, I think that this is a very, very bad idea. A
couple of code paths, including segment recycling and the new WAL
advancing rely on such monotonic properties. That would be also very
confusing for any monitoring job looking at pg_replication_slots.
--
Michael
