Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17056#discussion_r103096516
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/HashExpressionsSuite.scala
---
@@ -371,6 +370,48 @@ class HashExpressionsSuite extends SparkFunSuite with
ExpressionEvalHelper {
new StructType().add("array", arrayOfString).add("map",
mapOfString))
.add("structOfUDT", structOfUDT))
+ test("hive-hash for decimal") {
+ def checkHiveHashForDecimal(
+ input: String,
+ precision: Int,
+ scale: Int,
+ expected: Long): Unit = {
+ val decimal = Decimal.apply(new java.math.BigDecimal(input))
+ decimal.changePrecision(precision, scale)
+ val decimalType = DataTypes.createDecimalType(precision, scale)
+ checkHiveHash(decimal, decimalType, expected)
+ }
+
+ checkHiveHashForDecimal("18", 38, 0, 558)
--- End diff --
A quick question: these expected values are got from Hive?
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