kafka AdminClient API Timed out waiting for node assignment

Question

I\'m new to Kafka and am trying to use the AdminClient API to manage the Kafka server running on my local machine. I have it setup exactly the same as in the quick

Answer 1

Sounds like your broker isn't healthy...

This code works fine

public class Main {

    static final Logger logger = LoggerFactory.getLogger(Main.class);

    public static void main(String[] args) {
        Properties properties = new Properties();
        properties.setProperty(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
        properties.setProperty(AdminClientConfig.CLIENT_ID_CONFIG, "local-test");
        properties.setProperty(AdminClientConfig.RETRIES_CONFIG, "3");

        try (AdminClient client = AdminClient.create(properties)) {
            final CreateTopicsResult res = client.createTopics(
                    Collections.singletonList(
                            new NewTopic("foo", 1, (short) 1)
                    )
            );
            res.all().get(5, TimeUnit.SECONDS);
        } catch (InterruptedException | ExecutionException | TimeoutException e) {
            logger.error("unable to create topic", e);
        }
    }
}

And I can see in the broker logs that the topic was created

Answer 2

I started kafka service with bitnami/kafka, and got exactly the same error. Try to start kafka by this version, it works: https://hub.docker.com/r/wurstmeister/kafka

$ docker run -d --name zookeeper-server --network app-tier \
  -e ALLOW_ANONYMOUS_LOGIN=yes  -p 2181:2181 zookeeper:3.6.2

$ docker run -d --name kafka-server --network app-tier --publish 9092:9092 \
  --env KAFKA_ZOOKEEPER_CONNECT=zookeeper-server:2181 \
  --env KAFKA_ADVERTISED_HOST_NAME=30.225.51.235 \
  --env KAFKA_ADVERTISED_PORT=9092  \
  wurstmeister/kafka

30.225.51.235 is ip address for the host machine.