tanelk commented on a change in pull request #31983:
URL: https://github.com/apache/spark/pull/31983#discussion_r604597457
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
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@@ -2834,6 +2835,29 @@ class DataFrameSuite extends QueryTest
df10.select(zip_with(col("array1"), col("array2"), (b1, b2) =>
reverseThenConcat2(b1, b2)))
checkAnswer(test10, Row(Array(Row("cbaihg"), Row("fedlkj"))) :: Nil)
}
+
+ test("SPARK-34882: Aggregate with multiple distinct null sensitive
aggregators") {
+ spark.udf.register("countNulls", udaf(new Aggregator[JLong, JLong, JLong] {
Review comment:
I added the `withUserDefinedFunction`, but I did not understand the
first question.
I added this udaf, because the built in aggregates, that are "null
sensitive" (`First` and `Last`) gave unstable test results in the
`SQLQueryTestSuite`.
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