Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/23210#discussion_r238424196
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
---
@@ -1647,6 +1647,15 @@ class DatasetSuite extends QueryTest with
SharedSQLContext {
checkDataset(ds, data: _*)
checkAnswer(ds.select("x"), Seq(Row(1), Row(2)))
}
+
+ test("SPARK-26233: serializer should enforce decimal precision and
scale") {
--- End diff --
Can we have a test case in `RowEncoderSuite`, too?
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