Le lun. 15 juil. 2024 à 12:28, Tomas Vondra <tomas.von...@enterprisedb.com> a écrit : > > On 7/15/24 20:50, Julien Tachoires wrote: > > The last patch of this set is still in WIP, it adds the machinery > > required for setting the compression methods as a subscription option: > > CREATE SUBSCRIPTION ... WITH (spill_compression = ...); > > I think there is a major problem with this approach: the logical > > decoding context is tied to one replication slot, but multiple > > subscriptions can use the same replication slot. How should this work > > if 2 subscriptions want to use the same replication slot but different > > compression methods? > > > > Do we really support multiple subscriptions sharing the same slot? I > don't think we do, but maybe I'm missing something.
You are right, it's not supported, the following error is raised in this case: ERROR: replication slot "sub1" is active for PID 51735 I was distracted by the fact that nothing prevents the configuration of multiple subscriptions sharing the same replication slot. Thanks, JT
