Re: synchronized_standby_slots behavior inconsistent with quorum-based synchronous replication

Ajin Cherian <itsajin@gmail.com>

From: Ajin Cherian <itsajin@gmail.com>

To: Ashutosh Sharma <ashu.coek88@gmail.com>

Cc: SATYANARAYANA NARLAPURAM <satyanarlapuram@gmail.com>, shveta malik <shveta.malik@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2026-03-12T11:17:31Z

Lists: pgsql-hackers

On Sun, Mar 8, 2026 at 4:16 AM Ashutosh Sharma <ashu.coek88@gmail.com> wrote:
>
> Hi All,
>
> Submitting a new version of the patch based on Satya's earlier work - [1].
>
> Please take a look and let us know your thoughts.
>
> [1] - https://www.postgresql.org/message-id/CAHg%2BQDfU7rOebrLDESPpHSgdiadKbpCOmBokcbmM6Gr%2BA5VobQ%40mail.gmail.com
>

Hi Ashutosh,

I was testing this patch and it seems, if the name of the slots starts
with first, say firstslot or firstsub, then the patch treats it as
FIRST 1 priority mode.

I tested with this:
synchronized_standby_slots = 'firstsub1, firstsub2'

regards,
Ajin Cherian
Fujitsu Australia