Unable to connect to zookeeper server '127.0.0.1:33665' with timeout of 60000 ms

org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server '127.0.0.1:33665' with timeout of 60000 ms
	at org.apache.spark.streaming.kafka010.JavaKafkaRDDSuite.setUp(JavaKafkaRDDSuite.java:45)