Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/19496#discussion_r145034645
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
---
@@ -2103,4 +2103,13 @@ class DataFrameSuite extends QueryTest with
SharedSQLContext {
testData2.select(lit(7), 'a, 'b).orderBy(lit(1), lit(2), lit(3)),
Seq(Row(7, 1, 1), Row(7, 1, 2), Row(7, 2, 1), Row(7, 2, 2), Row(7,
3, 1), Row(7, 3, 2)))
}
+
+ test("SPARK-22271: mean overflows and returns null for some decimal
variables") {
+ val d = 0.034567890
+ val df = Seq(d, d, d, d, d, d, d, d, d, d).toDF("DecimalCol")
+ val result = df.select('DecimalCol cast DecimalType(38, 33))
+ .select(col("DecimalCol")).describe()
--- End diff --
Nit: two space indents.
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