title: How does Kafka store offsets for each topic?
body: <p>While polling Kafka, I have subscribed to multiple topics using the <code>subscribe()</code> function. Now, I want to set the offset from which I want to read from each topic, without resubscribing after every <code>seek()</code> and <code>poll()</code> from a topic. Will calling <code>seek()</code> iteratively over each of the topic names, <strong>before polling for data</strong> achieve the result?
  How are the offsets exactly stored in Kafka?</p>
  
  <p>I have one partition per topic and just one consumer to read from all topics.</p>