RecordTooLargeException in kafka

the following is kafka publishing code which is giving RecordTooLargeException exception.

tried all possible solutions given in stackoverflow giving info about different properties like max.request.size etc. but nothing worked. exact stack trace is

Caused by: org.springframework.kafka.KafkaException: Send failed; nested exception is org.apache.kafka.common.errors.RecordTooLargeException: The message is 1696090 bytes when serialized which is larger than 1048576, which is the value of the max.request.size configuration.

    @SuppressWarnings("unchecked")
	@Override
	public void run(String... args) throws Exception {

		JSONArray array = new JSONArray();

		for (int i = 0; i < 8000; i++) {
			JSONObject object = new JSONObject();
			object.put("no", 1);
			object.put("name", "Kella Vivek");
			object.put("salary", 1000);
			object.put("address", "2-143");
			object.put("city", "gpm");
			object.put("pin", 534316);
			object.put("dist", "west");
			object.put("state", "ap");
			object.put("username", "mff");
			object.put("password", "mff");
			array.add(object);
		}

		ObjectMapper mapper = new ObjectMapper();
		String string = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(array);

		template.send("consume", string);

	}

This is not a spring problem. You need to tweak a number of parameters in kafka producer to make this working.

Now to answer your question I did the following to enable sending 100 mb messages.

Create the properties and set size for buffer.memory, message.max.bytes and max.request.size as per your requirements.

Properties producerProperties = new Properties();
producerProperties.put("buffer.memory", 104857600);
producerProperties.put("message.max.bytes", 104857600);
producerProperties.put("max.request.size", 104857600);
producerProperties.put("bootstrap.servers", kafkaBootstrapServers);
producerProperties.put("acks", "all");
producerProperties.put("retries", 0);
producerProperties.put("batch.size", 16384);
producerProperties.put("linger.ms", 1);
producerProperties.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
producerProperties.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

Create Producer using the above properties:

KafkaProducer<String, String> producer = new KafkaProducer<>(producerProperties);

And now send.

private static void sendKafkaMessage(String payload,
         KafkaProducer<String, String> producer,
         String topic)
{
    logger.info("Sending Kafka message: " + payload);
    producer.send(new ProducerRecord<>(topic, payload));
}

You also need to ensure that the target server supports huge messages too. I configured following in the server for supporting huge messages.

auto.create.topics.enable=true
default.replication.factor=3
min.insync.replicas=2
num.io.threads=8
num.network.threads=5
num.partitions=1
num.replica.fetchers=2
replica.lag.time.max.ms=30000
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
socket.send.buffer.bytes=102400
unclean.leader.election.enable=true
zookeeper.session.timeout.ms=18000
replica.fetch.max.bytes=104857600
message.max.bytes=104857600