Re: [CAUTION: SUSPECT SENDER] RE: [CAUTION: SUSPECT SENDER] RE: BUG #19029: Replication Slot size keeps increasing while logical subscription works fine

On Mon, Aug 25, 2025 at 3:34 PM Thadeus Anand <thadeus@rmkv.com> wrote:
>
> The logical_decoding_work_mem at the publisher is currently set at 1 GB.
>
> I remember setting this a while ago as part of my struggle to get rid of the memory allocation issue.
>

Hmm, this means that your transaction size has a large number of
changes which leads to spilling of changes. This makes another
question of Kuroda-San more important, which is to show the size and
contents of pg_replslot. I have tried to check the fixes done in 17.5
and 17.6 but I don't see any obvious change which could lead to such a
problem. I could be missing something which we can try to find with
more information and probably if you can share a test.

-- 
With Regards,
Amit Kapila.