Databricks Community

lau_thiamkok · ‎08-05-2015

Why do I get this error on my browser screen,

<type 'exceptions.Exception'>: Java gateway process exited before sending the driver its port number args = ('Java gateway process exited before sending the driver its port number',) message = 'Java gateway process exited before sending the driver its port number'

For,

#!/Python27/python
print "Content-type: text/html; charset=utf-8"
print
# enable debugging
import cgitb
cgitb.enable()
import os
import sys
# Path for spark source folder
os.environ['SPARK_HOME'] = "C:\Apache\spark-1.4.1"
# Append pyspark to Python Path
sys.path.append("C:\Apache\spark-1.4.1\python")
from pyspark import SparkContext
from pyspark import SparkConf
from pyspark.sql import SQLContext
print ("Successfully imported Spark Modules")
# Initialize SparkContext
sc = SparkContext('local')
words = sc.parallelize(["scala","java","hadoop","spark","akka"])
print words.count()
sc.stop()

I'm on Windows7. My Spark version is spark-1.4.1-bin-hadoop2.6.tgz - prebuild for haddop 2.6 and later.

Any ideas how I can fix it?

jmdvinodjmd · ‎08-27-2015

I am facing the same problem....:( Have anybody found any solution?

lau_thiamkok · ‎08-27-2015

I got it fix by running the script on apache mod wsgi. DO NOT run it on cgi !!

lau_thiamkok · ‎08-27-2015

This is a working example running on wsgi,

import os import sys

Path for spark source folder

s.environ['SPARK_HOME'] = "C:\Apache\spark-1.4.1"

Append pyspark to Python Path

ys.path.append("C:\Apache\spark-1.4.1\python")

from pyspark import SparkContext from pyspark import SparkConf from pyspark.sql import SQLContext

This is our application object. It could have any name,

except when using mod_wsgi where it must be "application" def application(environ, start_response):

 # Initialize SparkContext
 sc = SparkContext('local')
 words = sc.parallelize(["scala","java","hadoop","spark","akka"])
 count = words.count()
 #print count

 sc.stop()

 response_body = "Successfully imported Spark Modules and the total words are: " + str(count)

 # HTTP response code and message
 status = '200 OK'

 # These are HTTP headers expected by the client.
 # They must be wrapped as a list of tupled pairs:
 # [(Header name, Header value)].
 response_headers = [('Content-Type', 'text/plain'),
                    ('Content-Length', str(len(response_body)))]

 # Send them to the server using the supplied function
 start_response(status, response_headers)

 # Return the response body.
 # Notice it is wrapped in a list although it could be any iterable.
 return [response_body]</pre>