title: ClassNotFoundException thrown launching Spark Shell
body: <p>I am trying to launch the spark shell for python from the directory using ./bin/pyspark</p>
  
  <p>When i run the command i get the following error: </p>
  
  <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError:    org/apache/spark/launcher/Main
  Caused by: java.lang.ClassNotFoundException: org.apache.spark.launcher.Main
      at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
  </code></pre>
  
  <p>It appears that I am missing: org.apache.spark.launcher.main </p>
  
  <p>I am not quite sure how to resolve this issue and was wondering if anyone had any suggestions or had run into similar issues. </p>
  
  <p>Thanks</p>