Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/2327#discussion_r17439088
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala
---
@@ -295,8 +295,16 @@ class HiveQuerySuite extends HiveComparisonTest {
"SELECT (CASE WHEN key > 2 THEN 3 WHEN 2 > key THEN 2 ELSE 0 END) FROM
src WHERE key < 15")
test("implement identity function using case statement") {
- val actual = sql("SELECT (CASE key WHEN key THEN key END) FROM
src").collect().toSet
- val expected = sql("SELECT key FROM src").collect().toSet
+ val actual = sql("SELECT (CASE key WHEN key THEN key END) FROM src")
+ .map { case Row(i: Int) => i }
+ .collect()
+ .toSeq
--- End diff --
Changing this from `toSet` to `toSeq` makes the query possibly order
dependent. This could break #2164.
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