If a topic has a replication factor of 3...

How can you gracefully make a Kafka consumer to stop immediately polling data from Kafka and gracefully shut down a consumer application?

How will you set the retention for the topic named my-topic to 1 hour?

What is a generic unique id that I can use for messages I receive from a consumer?

A producer application in a developer machine was able to send messages to a Kafka topic. After copying the producer application into another developer's machine, the producer is able to connect to Kafka but unable to produce to the same Kafka topic because of an authorization issue. What is the likely issue?