Re: Minimal logical decoding on standbys

On 4/7/23 3:59 AM, Amit Kapila wrote:
> On Fri, Apr 7, 2023 at 6:55 AM Andres Freund <andres@anarazel.de> wrote:
>>
>> On 2023-04-06 12:10:57 +0530, Amit Kapila wrote:
>>> After this, I think for backends that have active slots, it would
>>> simply cancel the current query. Will that be sufficient? Because we
>>> want the backend process should exit and release the slot so that the
>>> startup process can mark it invalid.
>>
>> We don't need them to exit, we just need them to release the slot. Which does
>> happen when the query is cancelled. Imagine if that weren't the case - if a
>> cancellation of pg_logical_slot_* wouldn't release the slot, we couldn't call
>> it again before disconnecting. I also did verify that indeed the slot is
>> released upon a cancellation.
>>
> 
> makes sense. Thanks for the clarification!
> 

+1, thanks Andres!

Regards,

-- 
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com