Re: speed up a logical replica setup - Mailing list pgsql-hackers

On Mon, Apr 29, 2024 at 5:28 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Mon, Apr 29, 2024 at 5:23 PM Euler Taveira <euler@eulerto.com> wrote:
>

I was trying to test this utility when 'sync_replication_slots' is on
and it gets in an ERROR loop [1] and never finishes. Please find the
postgresql.auto used on the standby attached. I think if the standby
has enabled sync_slots, you need to pass dbname in
GenerateRecoveryConfig(). I couldn't test it further but I wonder if
there are already synced slots on the standby (either due to
'sync_replication_slots' or users have used
pg_sync_replication_slots() before invoking pg_createsubscriber),
those would be retained as it is on new subscriber and lead to
unnecessary WAL retention and dead rows.

[1]
2024-04-30 11:50:43.239 IST [12536] LOG:  slot sync worker started
2024-04-30 11:50:43.247 IST [12536] ERROR:  slot synchronization
requires dbname to be specified in primary_conninfo

--
With Regards,
Amit Kapila.