org.apache.kafka.common.errors.ApiException: The session timeout is not within an acceptable range.

To overcome above issue in kafka v 0.9.x consumer , set the "session.timeout.ms" property value @ consumer properties > group.min.session.timeout.ms property @ server.properties

Custom Serializer/Deserializer for Apache Kafka v 0.9.x

If we want to publish java beans to apache kafka v 0.9.x, we might need to write our own custom Serializer/Deserializer for them.

This custom serializers can be registered in consumer/producer properties.

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.util.Map;

import org.apache.kafka.common.serialization.Deserializer;
import org.apache.kafka.common.serialization.Serializer;

import com.model.base.RawFile;


public class RawFileSerializer implements Serializer, Deserializer {

public RawFileSerializer() {

}

@Override
public RawFile deserialize(String arg0, byte[] fileContent) {
ByteArrayInputStream bis = new ByteArrayInputStream(fileContent);
ObjectInput in = null;
Object obj = null;
try {
in = new ObjectInputStream(bis);
obj = in.readObject();

} catch (IOException e) {

e.printStackTrace();
} catch (ClassNotFoundException e) {

e.printStackTrace();
} finally {
try {
bis.close();
if (in != null) {
in.close();
}
} catch (IOException ex) {
// ignore close exception
}

}
return (RawFile) obj;
}

@Override
public void close() {
// TODO Auto-generated method stub

}

@Override
public void configure(Map arg0, boolean arg1) {
// TODO Auto-generated method stub

}

@Override
public byte[] serialize(String arg0, RawFile file) {


ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutput out = null;
byte[] rawFileBytes = null;
try {
out = new ObjectOutputStream(bos);
out.writeObject(file);
rawFileBytes = bos.toByteArray();

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
bos.close();
}
} catch (Exception ex) {
ex.getLocalizedMessage();
}

}
return rawFileBytes;
}

}

Sample Kafka Producer and Consumer

Applied to: Apache Kafka Version: 0.9.X

Producer 

import java.io.IOException;
import java.time.LocalDateTime;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerRecord;

public class Producer { 

private void generateMessgaes() throws IOException {
    String topic = "myTopic";
    Properties props = new Properties();
    props.put("bootstrap.servers", "localhost: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");
    props.put("serializer.class", "org.apache.kafka.common.serialization.StringSerializer");
    props.put("client.id", "test");

    KafkaProducer producer = null;
    try {
          producer = new KafkaProducer<>(props);
          producer.send(new ProducerRecord(topic, "test msg"));
      } catch (Throwable e) {
        e.printStackTrace();

     } finally {
          producer.close(100,TimeUnit.MILLISECONDS);
      }
   }

public static void main(String[] args) throws IOException {
       Producer producer = new Producer();
       producer.generateMessgaes();
     }
}

Consumer

import java.util.Arrays;
import java.util.List;
import java.util.Properties;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.common.PartitionInfo;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.log4j.Logger;

public class Listener {

public void start() throws CoreException {
String topic = "myTopic";
List topics = Arrays.asList(topic);
Properties props = new Properties();
props.put("bootstrap.servers", "aukk1.leightonobrien.com:9092");
props.put("enable.auto.commit", "true"); props.put("auto.commit.interval.ms", "1000"); props.put("session.timeout.ms", "30000");; props.put("heartbeat.interval.ms", "10000"); props.put("auto.offset.reset", "earliest"); props.put("group.id", "test");
props.put("key.deserializer", StringDeserializer.class.getName());
props.put("value.deserializer", StringDeserializer.class.getName());
props.put("fetch.min.bytes", 1); props.put("receive.buffer.bytes", "10000"); props.put("max.partition.fetch.bytes", "10000"); props.put("request.timeout.ms", "40000"); KafkaConsumer consumer = new KafkaConsumer(props);
try { consumer.subscribe(topics);
} catch (Exception e) {
e.printStackTrace();
}
try {
while (true) {
ConsumerRecords records = consumer.poll(3000);
System.out.println("polling msges : " + records.count());
for (ConsumerRecord record : records) {
System.out.println("kafka record : " + record.value());
}
}
} catch (Exception e) {
e.printStackTrace();
} finally { consumer.close();
}
}
public static void main(String args[]) throws CoreException {
Listener listener = new Listener();
listener.start();
}
}

The session timeout is not within an acceptable range : Kafka v0.9.0.x

To overcome above issue [1] in the kafka 0.9.0.x, check following properties ;

1. group.max.session.timeout.ms in the server.properties > session.timeout.ms in the consumer.properties
2. group.min.session.timeout.ms in the server.properties < session.timeout.ms in the consumer.properties.

[1]

org.apache.kafka.common.errors.ApiException: The session timeout is not within an acceptable range.