Hi! If topic auto-creation is enabled on brokers, is there a way to disable it programmatically? For example, is there a way to prevent the creation of a producer or the sending of a message if the targeted topic does not exist?

You could disable auto-topic creation on a namespace, via admin API

Thanks Matteo. Is there a way to have more control? I'm happy with auto-topic creation, except for some specific topics within the same namespace.

Uhm, I don’t think that it’s possible to control that at the topic-level policies

ok, thx

You can also disable it at the broker level.

pulsar-admin brokers update-dynamic-config -c allowAutoTopicCreation -v false