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Posted to issues@spark.apache.org by "Davies Liu (JIRA)" <ji...@apache.org> on 2014/10/28 07:20:33 UTC
[jira] [Created] (SPARK-4113) Pyhon UDF on ArrayType
Davies Liu created SPARK-4113:
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Summary: Pyhon UDF on ArrayType
Key: SPARK-4113
URL: https://issues.apache.org/jira/browse/SPARK-4113
Project: Spark
Issue Type: Bug
Components: PySpark, SQL
Affects Versions: 1.2.0
Reporter: Davies Liu
Priority: Blocker
from Matei:
I have a table where column c is of type array<int>. However the following set of commands fails:
sqlContext.registerFunction("py_func", lambda a: len(a))
%sql select py_func(c) from some_temp
Error in SQL statement: java.lang.RuntimeException: org.apache.spark.SparkException: Job aborted due to stage failure: Task 2 in stage 252.0 failed 4 times, most recent failure: Lost task 2.3 in stage 252.0 (TID 8454, ip-10-0-157-104.us-west-2.compute.internal): net.razorvine.pickle.PickleException: couldn't introspect javabean: java.lang.IllegalArgumentException: wrong number of arguments
net.razorvine.pickle.Pickler.put_javabean(Pickler.java:603)
net.razorvine.pickle.Pickler.dispatch(Pickler.java:299)
net.razorvine.pickle.Pickler.save(Pickler.java:125)
net.razorvine.pickle.Pickler.put_arrayOfObjects(Pickler.java:392)
net.razorvine.pickle.Pickler.dispatch(Pickler.java:195)
net.razorvine.pickle.Pickler.save(Pickler.java:125)
net.razorvine.pickle.Pickler.put_arrayOfObjects(Pickler.java:392)
net.razorvine.pickle.Pickler.dispatch(Pickler.java:195)
net.razorvine.pickle.Pickler.save(Pickler.java:125)
net.razorvine.pickle.Pickler.dump(Pickler.java:95)
The same function works if I select a Row from my table into Python and call it on its third column.
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