Did you start your consumer before sending message? Broker version? Cheers, Steve
On Wed, Jan 20, 2016, 3:57 PM BYEONG-GI KIM <bg...@bluedigm.com> wrote: > Hello. > > I set up the Kafka testbed environment on my VirtualBox, which simply has a > Kafka broker. > > I tested the simple consumer & producer scripts, aka > kafka-console-consumer.sh and bin/kafka-console-producer.sh respectively, > and both of them worked fine. I could see the output from the consumer side > whenever typing any words on the producer. > > After that, I moved to test a simple java kafka producer/consumer. I copied > and pasted the example source code for producer from > > http://kafka.apache.org/090/javadoc/index.html?org/apache/kafka/clients/producer/KafkaProducer.html > , > and yeah, unfortunately, it seems not working well; no output was printed > by the above consumer script. There was even no error log on Eclipse. > > I really don't know what the problem is... I think that the properties for > both zookeeper and kafka seems fine, since the example scripts worked well, > at least. > > I attached my tested source code: > ====================================================================== > import java.util.Properties; > > import org.apache.kafka.clients.producer.KafkaProducer; > import org.apache.kafka.clients.producer.Producer; > import org.apache.kafka.clients.producer.ProducerRecord; > import org.apache.kafka.common.KafkaException; > import org.apache.kafka.common.errors.TimeoutException; > > public class ProducerExample { > public static void main(String[] args) throws Exception, TimeoutException, > KafkaException { > Properties props = new Properties(); > props.put("bootstrap.servers", "10.10.0.40:9092"); > props.put("acks", "all"); > props.put("retries", 0); > props.put("batch.size", 16384); > // props.put("linger.ms", 1); > props.put("buffer.memory", 33554432); > props.put("key.serializer", > "org.apache.kafka.common.serialization.StringSerializer"); > props.put("value.serializer", > "org.apache.kafka.common.serialization.StringSerializer"); > > Producer<String, String> producer = new KafkaProducer<String, > String>(props); > > try { > for (int i = 0; i < 10; i++) { > producer.send(new ProducerRecord<String, String>("test", 0, > Integer.toString(i), Integer.toString(i))); > } > } catch (TimeoutException te) { > System.out.println(te.getStackTrace()); > te.getStackTrace(); > } catch (Exception ke) { > System.out.println(ke.getStackTrace()); > ke.getStackTrace(); > } > > producer.close(); > } > } > ====================================================================== > > Any advice would really be helpful. Thanks in advance. > > Best regards > > Kim >
