Leader brokers without a matching listener error in kafka

Question

What is the meaning of this kafka error ?

[2018-08-22 11:40:49,429] WARN [Consumer clientId=consumer-1, groupId=console-consumer-62114] 1 partitions hav

Answer 1

[2018-08-22 11:40:49,429] WARN [Consumer clientId=consumer-1, groupId=console-consumer-62114] 1 partitions have leader brokers without a matching listener, including [topicname-0] (org.apache.kafka.clients.NetworkClient)

This error also happens if you try to run multiple consumers and the kafka topic contains only one partition. Generally one consumer should mapped with one partition. If you are using two consumers then you should have 2 partition in the kafka topic.