急于解决PySpark序列化EOFError吗？

Question

我试图从CSV中获取Spark DataFrame，并对其执行机器学习操作。我正在获取Python序列化EOFError

conf = SparkConf().setMaster("local").setAppName("MyApp")
sc = SparkContext(conf = conf)
sqlContext = SQLContext(sc)

#as DataFrame
df = sqlContext.read.format('com.databricks.spark.csv').options(header='true',
     inferschema='true').load('myfile.csv')

#dataframe into machine learning format
r_formula = RFormula(formula = "outcome ~ .")
mldf = r_formula.fit(df).transform(df)

#fit random forest model
rf = RandomForestClassifier(numTrees = 3, maxDepth = 2)
model = rf.fit(mldf)
result = model.transform(mldf).head()