Stuck on an issue?

Hi,

i’m just testing the library, but i’m not able to consume any message from my topic. I created a topic named parallelConsumerTest, with 10 partitions, and produced 1 million records in it. I already checked that the topic is not empty.

Here is my Java consumer:

Consumer<String, String> consumer = ConsumerCreator.createParallelConsumer();

ParallelConsumerOptions<String, String> options = ParallelConsumerOptions.<String, String>builder()
		.consumer(consumer)
		.ordering(ParallelConsumerOptions.ProcessingOrder.PARTITION)
		.maxConcurrency(10)
		.build();

ParallelStreamProcessor<String, String> parallelConsumer = ParallelStreamProcessor.createEosStreamProcessor(options);
parallelConsumer.subscribe(Collections.singletonList("parallelConsumerTest"));

System.out.println("PARALLEL CONSUMER SUBSCRIBED");
Map<String, String> mapRecord = new HashMap<>();

parallelConsumer.poll(record -> {

	System.out.println("Concurrently processing a record: {}" + record);
	mapRecord.put(record.key(), record.value());
});

System.out.println("RECORD COUNT: " + mapRecord.size());

What happen is that my mapRecord is always empty and i can’t understand why. Please note that using a “standard” Kafka Consumer, everything works fine. What am i doing wrong?

Thanks in advance!

Mauro