Unable to run a basic GraphFrames example
Question: Trying to run a simple GraphFrame example using pyspark.

spark version : 2.0

graphframe version : 0.2.0

I am able to import graphframes in Jupyter:

    
    
    from graphframes import GraphFrame
    GraphFrame
    graphframes.graphframe.GraphFrame
    

I get this error when I try and create a GraphFrame object:

    
    
    ---------------------------------------------------------------------------
    Py4JJavaError                             Traceback (most recent call last)
    <ipython-input-23-2bf19c66804d> in <module>()
    ----> 1 gr_links = GraphFrame(df_web_page, df_parent_child_link)
    
    /Users/roopal/software/graphframes-release-0.2.0/python/graphframes/graphframe.pyc in __init__(self, v, e)
         60         self._sc = self._sqlContext._sc
         61         self._sc._jvm.org.apache.spark.ml.feature.Tokenizer()
    ---> 62         self._jvm_gf_api = _java_api(self._sc)
         63         self._jvm_graph = self._jvm_gf_api.createGraph(v._jdf, e._jdf)
         64 
    
    /Users/roopal/software/graphframes-release-0.2.0/python/graphframes/graphframe.pyc in _java_api(jsc)
         32 def _java_api(jsc):
         33     javaClassName = "org.graphframes.GraphFramePythonAPI"
    ---> 34     return jsc._jvm.Thread.currentThread().getContextClassLoader().loadClass(javaClassName) \
         35             .newInstance()
         36 
    
    /Users/roopal/software/spark-2.0.0-bin-hadoop2.7/python/lib/py4j-0.10.1-src.zip/py4j/java_gateway.py in __call__(self, *args)
        931         answer = self.gateway_client.send_command(command)
        932         return_value = get_return_value(
    --> 933             answer, self.gateway_client, self.target_id, self.name)
        934 
        935         for temp_arg in temp_args:
    
    /Users/roopal/software/spark-2.0.0-bin-hadoop2.7/python/pyspark/sql/utils.pyc in deco(*a, **kw)
         61     def deco(*a, **kw):
         62         try:
    ---> 63             return f(*a, **kw)
         64         except py4j.protocol.Py4JJavaError as e:
         65             s = e.java_exception.toString()
    
    /Users/roopal/software/spark-2.0.0-bin-hadoop2.7/python/lib/py4j-0.10.1-src.zip/py4j/protocol.py in get_return_value(answer, gateway_client, target_id, name)
        310                 raise Py4JJavaError(
        311                     "An error occurred while calling {0}{1}{2}.\n".
    --> 312                     format(target_id, ".", name), value)
        313             else:
        314                 raise Py4JError(
    
    Py4JJavaError: An error occurred while calling o138.loadClass.
    : java.lang.ClassNotFoundException: org.graphframes.GraphFramePythonAPI
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:237)
        at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
        at py4j.Gateway.invoke(Gateway.java:280)
        at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:128)
        at py4j.commands.CallCommand.execute(CallCommand.java:79)
        at py4j.GatewayConnection.run(GatewayConnection.java:211)
        at java.lang.Thread.run(Thread.java:745)
    

The python code tries to read the java class (in the jar) I guess, but cant
seem to find it. Any suggestions how to fix this?


Answer: Make sure that your PYSPARK_SUBMIT_ARGS is updated to have "--packages
graphframes:graphframes:0.2.0-spark2.0" in your kernel.json
~/.ipython/kernels//kernel.json.

You probably already looked at the following
[link](https://developer.ibm.com/clouddataservices/2016/07/15/intro-to-apache-
spark-graphframes/). It has more details on Jupiter setup. Basically, pyspark
has to be supplied the graphframes.jar.

