Github user zhzhan commented on a diff in the pull request:
https://github.com/apache/spark/pull/16068#discussion_r90763121
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveUDFSuite.scala
---
@@ -487,6 +488,29 @@ class HiveUDFSuite extends QueryTest with
TestHiveSingleton with SQLTestUtils {
assert(count4 == 1)
sql("DROP TABLE parquet_tmp")
}
+
+ test("Hive Stateful UDF") {
+ sql(s"CREATE TEMPORARY FUNCTION statefulUDF AS
'${classOf[StatefulUDF].getName}'")
+ sql(s"CREATE TEMPORARY FUNCTION statelessUDF AS
'${classOf[StatelessUDF].getName}'")
+ val testData = spark.sparkContext.parallelize(
+ (0 until 10) map(x => IntegerCaseClass(1)), 2).toDF()
+ testData.createOrReplaceTempView("inputTable")
+ val max1 =
+ sql("SELECT MAX(s) FROM (" +
+ "SELECT statefulUDF() as s FROM (SELECT i from inputTable
DISTRIBUTE by i) a" +
+ ") b").head().getLong(0)
--- End diff --
will rewrite it after gathering feedback from others.
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