Azure Service Bus message abandon and dead letter queue

Question

• In Azure Service Bus topic, I am having two subscriptions subscription1 and subscription2. I am sending one message to topic. In subscription1 the message got abandoned and in subscription2 the message got processed. Whether the abandoned message in subscription1 will again be sent to both subscriptions or only subscription in which it got abandoned.

• I am also a little bit confused whether the dead letter queue will be common for all subscriptions or each subscription will have a separate dead letter queue?

Please clarify me on the above two points.

Answer 1

Subcriptions are independent. Abandon affects just the one where it was abandoned, and dead letter queues are separate.

One caveat is that if you want to resubmit messages from DLQ, you can't send them directly to the corresponding subscription, it has to go through the topic again.