Hey Felix :)

We'd like to use kt group to view and manipulate offsets, however the command doesn't show any of our groups on Kafka v0.10.0.1

I've tested the exact same consumer code on Kafka 0.10.1.0 and in that case kt group shows the consumer groups as expected.

Note that we use sarama to create the consumer and mark offsets directly using sarama.PartitionOffsetManager.MarkOffset. We're not using sarama-cluster.

Do you know any reason why kt group wouldn't show all consumer groups for Kafka versions older than 0.10.1.0?