title: kafka + description of the leaders and replications one of the leader not exists
body: <p>we have ( <strong>3 kafka machines</strong> ) </p>
  
  <p>kafka brokers id's - are ( <strong>101 , 102 ,103</strong> )</p>
  
  <p>ambari version - 2.6.1</p>
  
  <p>hadoop version 2.6.5</p>
  
  <p>29 datanode machines</p>
  
  <p>3 journal machines ( master machines )</p>
  
  <p>when we run the following command</p>
  
  <pre><code>kafka-topics.sh --zookeeper 10.231.23.45:2181 –describe
  </code></pre>
  
  <p>we see the description of the leaders and replications</p>
  
  <p>but what is wrong here is we see only two leaders for each topic</p>
  
  <p>in our case the topic name - <strong>MLK_PLW_QA</strong> , but the same situation is on all the topics</p>
  
  <pre><code>Topic:MLK_PLW_QA    PartitionCount:100  ReplicationFactor:3 Configs:retention.bytes=9239504949
      Topic: MLK_PLW_QA   Partition: 0    Leader: 102 Replicas: 102,101,103   Isr: 101,102,103
      Topic: MLK_PLW_QA   Partition: 1    Leader: 102 Replicas: 103,102,101   Isr: 101,102
      Topic: MLK_PLW_QA   Partition: 2    Leader: 101 Replicas: 101,103,102   Isr: 101,102,103
      Topic: MLK_PLW_QA   Partition: 3    Leader: 102 Replicas: 102,103,101   Isr: 101,102,103
      Topic: MLK_PLW_QA   Partition: 4    Leader: 101 Replicas: 103,101,102   Isr: 101,102
      Topic: MLK_PLW_QA   Partition: 5    Leader: 101 Replicas: 101,102,103   Isr: 101,102,103
      Topic: MLK_PLW_QA   Partition: 6    Leader: 102 Replicas: 102,101,103   Isr: 101,102,103
      Topic: MLK_PLW_QA   Partition: 7    Leader: 102 Replicas: 103,102,101   Isr: 101,102
  </code></pre>
  
  <p>I must to say that this situation not appears before couple days , and we see all leaders 101 , 102 , 103 ( from kafka-topics.sh --zookeeper 10.231.23.45:2181 –describe )</p>
  
  <p>what are the reasons that broker id - 103 not appears as leader ?</p>
  
  <p>note - all kafka brokers services are running ( we can see that from ambari gui )</p>