Hi All, Posting here as suggested here <https://github.com/apache/beam/issues/25978#issuecomment-1508530483>.
I'm using KafkaIO to consume events from a Kafka topic. I've added "group.id" to the consumer properties. When running the pipeline I can see this value sent to Kafka in the consumer properties. The consumers created by KafkaIO fail to join the consumer group. Looking into the code I can see that nowhere is the consumer "subscribing" to the topic which is how KafkaConsumer should join a consumer group. It seems the code attempts to circumvent the partition assignment mechanism provided by Kafka to use it's own. By doing that it prevents the user from using consumer groups. Is that by intention? Is there any reason why the decision to avoid using consumer groups has been taken? I would love to see any documentation about that if possible please. Cheers, Shahar.
