Re: Issue with logical replication slot during switchover

On Wed, Aug 13, 2025 at 9:29 PM Fabrice Chapuis <fabrice636861@gmail.com> wrote:
>
> Thanks for sharing this. In fact,  I agree, introducing an allow_overwrite slot property makes seems cleaner than a
GUCfor this specific use case. 
>
> a) At first, an extension of pg_create_logical_replication_slot() could be proposed
> b) pg_alter_logical_replication_slot(): that could be is a neat approach, a generic API for modifying other slot
propertiesseems like a forward-looking design choice. However I don't know if slot properties could be modified easily
becausewhen slot is active, a process is holding them in memory. 

Right, it can not be.This API can be used when the slot is not
acquired by any other process. We may have use-cases for that as well
similar to one we have for this switchover case.

thanks
Shveta