title: Two Kafka Consumer application having same group.id and same consumer.id
body: <p>I have 2 different application instance consuming message from a topic, both application have same values for group.id and consumer.id</p>
  
  <p>Will message is read by only 1 application or by both application? Also if we have same consumer.id in 2 different application, will it considered as 2 consumers in one group or only single consumer in that group?</p>
  
  <p>E.g.  App1 instance, group.id = conGrp1, consumer.id = consumer<br>
        App2 instance, group.id = conGrp1, consumer.id = consumer1</p>
  
  <p>Do we still have only one group with one consumer, even though 2 different application instance are running?</p>