Apache Kafka example error: Failed to send message after 3 tries

Question

I am running this kafka producer example mentioned in its site

The code:

public class TestProducer {

    public static void main(String[] args) {
               


        

Answer 1

I got the error from apache kafka:

bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details

My Setup:

OS: Ubuntu 14.04
sbt: sbt launcher version 0.13.5
scala: Scala code runner version 2.9.2

Was able to fix it with these commands:

cd /home/el/apachekafka/kafka_2.10-0.8.1.1/libs
wget http://www.slf4j.org/dist/slf4j-1.7.7.tar.gz
tar -xvf slf4j-1.7.7.tar.gz
cd /home/el/apachekafka/kafka_2.10-0.8.1.1/libs/slf4j-1.7.7
cp slf4j-api-1.7.7.jar ..
cp slf4j-nop-1.7.7.jar ..

Then re-run the command and the producer doesn't throw any error.