Re: pg_recvlogical: Prevent flushed data from being re-sent after restarting replication

Mircea Cadariu <cadariu.mircea@gmail.com>

From: Mircea Cadariu <cadariu.mircea@gmail.com>
To: Fujii Masao <masao.fujii@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2025-12-29T12:45:03Z
Lists: pgsql-hackers
Hi,

Thanks for the patch updates.

On 26/12/2025 10:28, Fujii Masao wrote:
> Maybe it's better to use slurp_file(). We already have wait_for_log() to
> wait for a message in the cluster's log file, but there's no helper function
> to wait for specific content to appear in an arbitrary file.
>
> To support waiting for output in pg_recvlogical's output file,
> I added a new helper that uses slurp_file() (see the attached 0002 patch).
> I also updated the 0003 patch (the pg_recvlogical reconnection test) to
> use this helper instead of pg_read_file(). Thoughts?

Agreed, nice addition.

I applied the v3-000* patch set and it builds successfully and passes 
the tests on my laptop.

However the CI seems not completely happy yet, with previous 2 runs not 
green for Windows. Could it be there's an issue with executing the test 
on Windows?

-- 
Thanks,
Mircea Cadariu