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https://issues.apache.org/jira/browse/SPARK-11509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14990600#comment-14990600
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Sean Owen commented on SPARK-11509:
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This ultimately means the initialization failed. In this situation you have to
dig in the logs to see why it did, but that's why sc isn't available.
But I think you ended up finding the reason there: Python version mismatch
right?
> ipython notebooks do not work on clusters created using
> spark-1.5.1-bin-hadoop2.6/ec2/spark-ec2 script
> ------------------------------------------------------------------------------------------------------
>
> Key: SPARK-11509
> URL: https://issues.apache.org/jira/browse/SPARK-11509
> Project: Spark
> Issue Type: Bug
> Components: Documentation, EC2, PySpark
> Affects Versions: 1.5.1
> Environment: AWS cluster
> [ec2-user@ip-172-31-29-60 ~]$ uname -a
> Linux ip-172-31-29-60.us-west-1.compute.internal 3.4.37-40.44.amzn1.x86_64 #1
> SMP Thu Mar 21 01:17:08 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
> Reporter: Andrew Davidson
>
> I recently downloaded spark-1.5.1-bin-hadoop2.6 to my local mac.
> I used spark-1.5.1-bin-hadoop2.6/ec2/spark-ec2 to create an aws cluster. I am
> able to run the java SparkPi example on the cluster how ever I am not able to
> run ipython notebooks on the cluster. (I connect using ssh tunnel)
> According to the 1.5.1 getting started doc
> http://spark.apache.org/docs/latest/programming-guide.html#using-the-shell
> The following should work
> PYSPARK_DRIVER_PYTHON=ipython PYSPARK_DRIVER_PYTHON_OPTS="notebook
> --no-browser --port=7000" /root/spark/bin/pyspark
> I am able to connect to the notebook server and start a notebook how ever
> bug 1) the default sparkContext does not exist
> from pyspark import SparkContext
> textFile = sc.textFile("file:///home/ec2-user/dataScience/readme.md")
> textFile.take(3
> ---------------------------------------------------------------------------
> NameError Traceback (most recent call last)
> <ipython-input-1-127b6a58d5cc> in <module>()
> 1 from pyspark import SparkContext
> ----> 2 textFile = sc.textFile("file:///home/ec2-user/dataScience/readme.md")
> 3 textFile.take(3)
> NameError: name 'sc' is not defined
> bug 2)
> If I create a SparkContext I get the following python versions miss match
> error
> sc = SparkContext("local", "Simple App")
> textFile = sc.textFile("file:///home/ec2-user/dataScience/readme.md")
> textFile.take(3)
> File "/root/spark/python/lib/pyspark.zip/pyspark/worker.py", line 64, in main
> ("%d.%d" % sys.version_info[:2], version))
> Exception: Python in worker has different version 2.7 than that in driver
> 2.6, PySpark cannot run with different minor versions
> I am able to run ipython notebooks on my local Mac as follows. (by default
> you would get an error that the driver and works are using different version
> of python)
> $ cat ~/bin/pySparkNotebook.sh
> #!/bin/sh
> set -x # turn debugging on
> #set +x # turn debugging off
> export PYSPARK_PYTHON=python3
> export PYSPARK_DRIVER_PYTHON=python3
> IPYTHON_OPTS=notebook $SPARK_ROOT/bin/pyspark $*$
> I have spent a lot of time trying to debug the pyspark script however I can
> not figure out what the problem is
> Please let me know if there is something I can do to help
> Andy
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