Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/22162#discussion_r216119774
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
---
@@ -969,6 +969,20 @@ class DatasetSuite extends QueryTest with
SharedSQLContext {
checkShowString(ds, expected)
}
+ test("SPARK-24442 Show should follow spark.show.default.number.of.rows")
{
+ withSQLConf("spark.sql.show.defaultNumRows" -> "100") {
+ (1 to 1000).toDS().as[Int].show
+ }
+ }
+
+ test("SPARK-24442 Show should follow
spark.show.default.truncate.characters.per.column") {
+ withSQLConf("spark.sql.show.truncateMaxCharsPerColumn" -> "30") {
+ (1 to 1000).map(x => "123456789_123456789_123456789_")
+ .toDS().as[String]
+ .show
--- End diff --
Plz compare the show result?
https://github.com/apache/spark/blob/9241e1e7e66574cfafa68791771959dfc39c9684/sql/core/src/test/scala/org/apache/spark/sql/UDFSuite.scala#L326
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