why we can t apply udf on rdd ???

[issues solution <is...@gmail.com>]

hi
what kind of orgine of this error  ???

java.lang.UnsupportedOperationException: Cannot evaluate expression:
PythonUDF#Grappra(input[410, StringType])


regrads

Re: why we can t apply udf on rdd ???

[Andrés Ivaldi <ia...@gmail.com>]

Hi,
what Spark version are you using?
Did you register the UDF?
How are you using the UDF?
Does the UDF support that data type as parameter?

What I do with Spark 2.0 is
-Create the UDF for each dataType I need
-Register the UDF to sparkContext
-I use UDF over dataFrame not RDD, you can convert it easily
-then dataSet.withColumn( myColumn, expr("myUDF(myColumn)") )





On Thu, Apr 13, 2017 at 6:52 AM, issues solution <is...@gmail.com>
wrote:

> hi
> what kind of orgine of this error  ???
>
> java.lang.UnsupportedOperationException: Cannot evaluate expression:
> PythonUDF#Grappra(input[410, StringType])
>
>
> regrads
>
>


-- 
Ing. Ivaldi Andres