mengxr commented on a change in pull request #24643:
[SPARK-26412][PySpark][SQL] Allow Pandas UDF to take an iterator of pd.Series
or an iterator of tuple of pd.Series
URL: https://github.com/apache/spark/pull/24643#discussion_r293607672
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/python/ExtractPythonUDFs.scala
##########
@@ -111,19 +111,27 @@ object ExtractPythonUDFs extends Rule[LogicalPlan] with
PredicateHelper {
}
private def collectEvaluableUDFsFromExpressions(expressions:
Seq[Expression]): Seq[PythonUDF] = {
- // Eval type checker is set once when we find the first evaluable UDF and
its value
- // shouldn't change later.
- // Used to check if subsequent UDFs are of the same type as the first UDF.
(since we can only
+ // If fisrt UDF is SQL_SCALAR_PANDAS_ITER_UDF, then only return this UDF,
+ // otherwise check if subsequent UDFs are of the same type as the first
UDF. (since we can only
// extract UDFs of the same eval type)
- var evalTypeChecker: Option[EvalTypeChecker] = None
+
+ var firstVisitedUDFEvalType: Option[Int] = None
Review comment:
`firstVisitedScalarUDFEvalType`
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