title: Kafka 1.0.x Delete consumer group
body: <p>I am trying to delete an unused consumer group. Since I'm using version 1.0.x, based on the official docs</p>
  <pre><code>When using the new consumer API (where the broker handles coordination of partition handling and rebalance), the group is deleted when the last committed offset for that group expires.
  </code></pre>
  <p>the configuration properties prescribing this behavior in my case are</p>
  <pre><code>#set offset retention to 2 weeks
  offsets.retention.minutes=20160
  </code></pre>
  <p>I could only find these in the <code>server.properties</code>. There's no mention of them in the Consumer Config logged upon the startup of the application</p>
  <p>Trying to re-configure the group so that <code>offsets.retention.minutes=0</code>, I could not find a definitive answer. I'm quite surprised that one cannot change this using <code>kafka-consumer-groups</code> on a group level... Can this be so involved?</p>
  <p>I know that there is a <a href="https://kafka.apache.org/26/javadoc/org/apache/kafka/clients/admin/Admin.html#deleteConsumerGroups-java.util.Collection-" rel="nofollow noreferrer">deleteConsumerGroups</a> API but this as introduced in version 1.1.x. Is the only way to delete this group to just wait for the offsets to expire?</p>