diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/UnsafeExternalSortSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/UnsafeExternalSortSuite.scala
index f4b8782e39b03..c5ab74ad72266 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/UnsafeExternalSortSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/UnsafeExternalSortSuite.scala
@@ -40,12 +40,12 @@ class UnsafeExternalSortSuite extends SparkPlanTest with BeforeAndAfterAll {
   // TODO: randomized spilling to ensure that merging is tested at least once for every data type.
   for (
     dataType <- DataTypeTestUtils.atomicTypes ++ Set(NullType);
-    nullable <- Seq(true, false);
-    sortOrder <- Seq('a.asc :: Nil, 'a.desc :: Nil);
+    nullable <- Seq(false);
+    sortOrder <- Seq('a.asc :: Nil);
     randomDataGenerator <- RandomDataGenerator.forType(dataType, nullable)
   ) {
     test(s"sorting on $dataType with nullable=$nullable, sortOrder=$sortOrder") {
-      val inputData = Seq.fill(3)(randomDataGenerator()).filter {
+      val inputData = Seq.fill(10)(randomDataGenerator()).filter {
         case d: Double => !d.isNaN
         case f: Float => !java.lang.Float.isNaN(f)
         case x => true
@@ -57,7 +57,7 @@ class UnsafeExternalSortSuite extends SparkPlanTest with BeforeAndAfterAll {
       assert(UnsafeExternalSort.supportsSchema(inputDf.schema))
       checkAnswer(
         inputDf,
-        UnsafeExternalSort(sortOrder, global = false, _: SparkPlan, testSpillFrequency = 2),
+        UnsafeExternalSort(sortOrder, global = false, _: SparkPlan, testSpillFrequency = 3),
         Sort(sortOrder, global = false, _: SparkPlan),
         sortAnswers = false
       )