question Re: Kafka is not working / Warning while sending messages in Archives of Support Questions (Read Only)

Kafka is not working / Warning while sending messages

yellowD — Fri, 16 Sep 2022 13:55:22 GMT

Hi, I recently started to read up in kafka. Now I would like to start working on cloudera but I have some problems with sending messages. I created a a topic with following code: $ kafka-topics --create --zookeeper 127.0.0.1:2181 --replication-factor 1 --partitions 1 --topic test --> it worked then i tried to send some messages with following code: $ kafka-console-producer --broker-list 127.0.0.1:2181 --topic test --> doesnt work but as soon I write a message, i get several Warnings and an Error message: WARN [Producer clientId=console-producer] Bootstrap broker 127.0.0.1:2181 (id: -1 rack: null) disconnected (org.apache.kafka.clients.NetworkClient) ... ERROR Error when sending message to topic test with key: null, value: 9 bytes with error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback) org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms. Does someone can help me to fix this problem?

Re: Kafka is not working / Warning while sending messages

manuelschipper — Fri, 23 Nov 2018 15:47:42 GMT

Hello,

What version of Cloudera Kafka/CDH are you testing?

Can you do the following:
kafka-topics --zookeeper <zkhost>:2181 --list
kafka-topics --zookeeper <zkhost>:2181 --describe --topic test

Cheers!
Manuel

Re: Kafka is not working / Warning while sending messages

Harsh J — Fri, 23 Nov 2018 16:52:52 GMT

Your port for broker is incorrect in that command, you're supplying the
ZooKeeper port of 2181 in an argument that requires the Broker client port
of 9092.

Follow our guide at
https://www.cloudera.com/documentation/kafka/latest/topics/kafka_command_line.html
for using the command line tools.