Apache Kafka - KafkaStream on topic/partition

Question

I am writing Kafka Consumer for high volume high velocity distributed application. I have only one topic but rate incoming messages is very high. Having multiple partition that

Answer 1

/**
 * @param source : source kStream to sink output-topic
 */
private static void pipe(KStream source) {
    source.to(Serdes.String(), Serdes.String(), new StreamPartitioner() {

        @Override
        public Integer partition(String arg0, String arg1, int arg2) {
            return 0;
        }
    }, "output-topic");
}

above code will write record at partition 1 of topic name "output-topic"