cnstream/source/cns_launcher/configs/sinker_configs/kafka.json

{
  "kafka_producer" : {
    "class_name" : "cnstream::Kafka",
    "parallelism" : 1,
    "max_input_queue_size" : 20,
    "custom_params" : {
      "handler" : "DefaultKafkaHandler",
      "topic" : "CnstreamData",
      "brokers" : "localhost:9092"
    }
  }
}