Trouble reliably reusing consumer group names across topics

[mcandre]

When the same identifier for Kafka group is used to consume different topics, sometimes the wvanbergen client receives 0 messages.

As a workaround, users can explicitly prefix each group name with <topic>-, but ideally this would be fixed by the client library itself.

[wvanbergen]

I am not actively working on this library anymore, so it's unlikely that I will look into this issue in the foreseeable future.