Traceback (most recent call last):


 "/tmp/db4d8e04-85c9-4eba-b0b3-4ade69200fd3/test.py", line 60, in <module>

rf_df.show()


 "/usr/lib/spark/python/lib/pyspark.zip/pyspark/sql/dataframe.py", line 287, in show


 "/usr/lib/spark/python/lib/py4j-0.10.3-src.zip/py4j/java_gateway.py", line 1133, in __call__


 "/usr/lib/spark/python/lib/pyspark.zip/pyspark/sql/utils.py", line 63, in deco

for criterion, pop in criteria_pops:


 "/usr/lib/spark/python/lib/py4j-0.10.3-src.zip/py4j/protocol.py", line 319, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling o73.showString.

Traceback (most recent call last):

 "C:\Devlp\env\lib\site-packages\tornado-2.2-py2.7.egg\tornado\web.py", line 693, in send_error
self.write_error(status_code, **kwargs)

 "C:\Devlp\env\lib\site-packages\tornado-2.2-py2.7.egg\tornado\web.py", line 739, in write_error
"message": httplib.responses[status_code],

 "C:\Devlp\env\lib\site-packages\tornado-2.2-py2.7.egg\tornado\web.py", line 668, in finish
self.flush(include_footers=True)

 "C:\Devlp\env\lib\site-packages\tornado-2.2-py2.7.egg\tornado\web.py", line 631, in flush
self.request.write(headers + chunk, callback=callback)

 "C:\Devlp\env\lib\site-packages\tornado-2.2-py2.7.egg\tornado\httpserver.py", line 418, in write
self.connection.write(chunk, callback=callback)

 "C:\Devlp\env\lib\site-packages\tornado-2.2-py2.7.egg\tornado\httpserver.py", line 176, in write
assert self._request, "Request closed"AssertionError: Request closed