Hello everyone, I was reading/checking kafka documentation regarding point-2-point and publish subscribe communications patterns in kafka and I am wondering how to scale up consumer side in point to point scenario when consuming from single kafka topic.
Let say I have a single topic with single partition and I have one node where the kafka consumer is running. If I want to scale up my service I add another node - which has the same configuration as the first one (topic, partition and consumer group id). Those two nodes start competing for messages from kafka topic. What I am not sure in this scenario and is actually subject of my question is "*Whether they do get each node unique messages or there is still possibility that some messages will be consumed by both nodes etc*". Because I can see scenarios that both nodes are started at the same time - they gets the same topic offset from zookeeper and started consuming messages from that offset. OR am I thinking in a wrong direction? Thanks Jakub
