[jira] [Created] (KAFKA-6229) Controller node is not switched in ZK when existing is blocked using iptables

["Navdeep Brar (JIRA)" <ji...@apache.org>]

Navdeep Brar created KAFKA-6229:
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             Summary: Controller node is not switched in ZK when existing is blocked using iptables
                 Key: KAFKA-6229
                 URL: https://issues.apache.org/jira/browse/KAFKA-6229
             Project: Kafka
          Issue Type: Bug
            Reporter: Navdeep Brar


When controller node is blocked on network, ZK has no information that controller went down and doesn't switch to new controller (other broker). 

 - This only happens when connection is blocked using iptables
 - if kafka service is brought down on controller node or even killed, then ZK very well acknowledges it and switches to new controller




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