old_contents: CLUSTER_CONFIG = "spark://172.31.24.105:7077"
  
  # relative path
  PYSPARK_HOME = "../spark-0.8.1-emr/pyspark"
  PYSPARK_MODULE_HOME = "../spark-0.8.1-emr/python/pyspark"
  SPARKLER_HOME = "../spark-0.8.1-emr/python/sparkler"
  
new_contents: CLUSTER_CONFIG = "local"
  
  # relative path
  PYSPARK_HOME = "../build/spark-0.7.0/pyspark"
  PYSPARK_MODULE_HOME = "../build/spark-0.7.0/python/pyspark"
  SPARKLER_HOME = "../build/spark-0.7.0/python/sparkler"
subject: revert pyspark home to local settings