Exception running kafka-console-producer.sh (0.8.1.1)

Question

I am trying out the kafka-console-producer.sh. I type something to the console and hit enter and I get tons of stack traces to the console like this. Appreciate any pointers.

Answer 1

This is because you are starting your consumer in a wrong way. If you will check the official documentation, you can see that you have to:

start Zookeper

bin/zookeeper-server-start.sh config/zookeeper.properties

start Kafka

bin/kafka-server-start.sh config/server.properties

create a topic

bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test

start producing messages for a topic

bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test 

Notice the difference: you are connecting to zookeper (port 2181) you need to connect to a broker (port 9092)

Answer 2

Your broker-list argument is pointing to Zookeeper instead of the actual broker. The proper usage would be:

./bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test

assuming your broker runs on port 9092 (default).

You can refer here for more information (your issue is described in Step 4: Send some messages)