python - pyspark执行问题

用pyspark创建一个SparkSession时出现了这个问题，以下为控制台报错内容：

Exception                                 Traceback (most recent call last)
 in ()
----> 1 spark = SparkSession.builder.appName("EstimatorTransformerParamExample").getOrCreate()

/home/zhugongzaici/DS/spark-2.0.0-bin-hadoop2.7/python/pyspark/sql/session.py in getOrCreate(self)
    164                 session = SparkSession._instantiatedContext
    165                 if session is None:
--> 166                     sparkConf = SparkConf()
    167                     for key, value in self._options.items():
    168                         sparkConf.set(key, value)

/home/zhugongzaici/DS/spark-2.0.0-bin-hadoop2.7/python/pyspark/conf.py in __init__(self, loadDefaults, _jvm, _jconf)
    102         else:
    103             from pyspark.context import SparkContext
--> 104             SparkContext._ensure_initialized()
    105             _jvm = _jvm or SparkContext._jvm
    106             self._jconf = _jvm.SparkConf(loadDefaults)

/home/zhugongzaici/DS/spark-2.0.0-bin-hadoop2.7/python/pyspark/context.py in _ensure_initialized(cls, instance, gateway)
    241         with SparkContext._lock:
    242             if not SparkContext._gateway:
--> 243                 SparkContext._gateway = gateway or launch_gateway()
    244                 SparkContext._jvm = SparkContext._gateway.jvm
    245 

/home/zhugongzaici/DS/spark-2.0.0-bin-hadoop2.7/python/pyspark/java_gateway.py in launch_gateway()
     92                 callback_socket.close()
     93         if gateway_port is None:
---> 94             raise Exception("Java gateway process exited before sending the driver its port number")
     95 
     96         # In Windows, ensure the Java child processes do not linger after Python has exited.

Exception: Java gateway process exited before sending the driver its port number

开发环境是ubuntu下的jupyter notebook(anaconda3),开发语言python3