Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/7593#discussion_r35286283
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
---
@@ -832,4 +832,15 @@ class DataFrameSuite extends QueryTest with
SQLTestUtils {
assert(e3.getMessage.contains("Inserting into an RDD-based table is
not allowed."))
}
}
+
+ test("sort with non-deterministic expressions") {
+ import org.apache.spark.util.random.XORShiftRandom
+
+ val seed = 33
+ val df = (1 to 100).map(Tuple1.apply).toDF("i")
+ val random = new XORShiftRandom(seed)
+ val expected = (1 to 100).map(_ ->
random.nextDouble()).sortBy(_._2).map(_._1)
+ val actual = df.sort(rand(seed)).collect().map(_.getInt(0))
+ assert(expected === actual)
--- End diff --
This is guaranteed by `CheckAnalysis`, now `Sort` is marked as resolved
only when its ordering expressions are all `AttributeReference`.
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