title: Kafka - Offset and logSize
body: <p>I see the below details when looking up the ddetails of Kafka logs. Does this mean that there are a total of 17905513 messages out of which 17905510 have already been read and 3 are pending to be read?</p>
  
  <pre><code>Offset      logSize     Lag 
  17905510    17905513    3
  </code></pre>