i get the error of Py4JJavaError: An error occurred while calling o177.showString while running code below

[muhammet pakyürek]

i used spark 2.0.1 and work pypsaprk.sql dataframe


lower = arguments["lower"]
                lower_udf = udf(lambda x: lower if x<lower else x, 
IntegerType())
                data.withColumn(col_name,lower_udf(col_name)).show()