How do I delete a Kafka Consumer Group to reset offsets?

Question

I want to delete a Kakfa consumer group so that when the application creates a consumer and subscribes to a topic it can start at the beginning of the topic data.

Th

Answer 1

In Kafka 0.11 (or Confluent 3.3) you can reset the offsets of any existing consumer group without having to delete the topic. In fact you can change the offsets to any absolute offset value or timestamp or any relative position as well.

These new functions are all added with the new --reset-offsets flag on the kafka-consumer-groups command line tool.

See KIP-122 details here https://cwiki.apache.org/confluence/display/KAFKA/KIP-122%3A+Add+Reset+Consumer+Group+Offsets+tooling