The group coordinator is not available-Kafka

Question

When I am write a topic to kafka,there is an error:Offset commit failed:

2016-10-29 14:52:56.387 INFO [nioEventLoopGroup-3-1][org.apache.kafka.commo         


        

Answer 1

I faced similar issue. The problem I had was, when you start your kafka broker there is a property associated with it, "KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR". If you are working with single node cluster make sure you set this property with value '1'. As its default value is 3. This change resolved my problem. (you can check the value in kafka.properties file) Note: I was using base image of confluent kafka version 4.0.0 ( confluentinc/cp-kafka:4.0.0)