tanelk commented on a change in pull request #32769:
URL: https://github.com/apache/spark/pull/32769#discussion_r647107606
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
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@@ -4003,6 +4003,56 @@ class SQLQuerySuite extends QueryTest with
SharedSparkSession with AdaptiveSpark
}
checkAnswer(sql(s"select /*+ REPARTITION(3, a) */ a b from values('123')
t(a)"), Row("123"))
}
+
+ test("SPARK-35630: ExpandExec should not introduce unnecessary exchanges") {
+ withTable("test_table") {
+ spark.range(11)
+ .withColumn("group1", $"id" % 2)
+ .withColumn("group2", $"id" % 4)
+ .withColumn("a", $"id" % 3)
+ .withColumn("b", $"id" % 6)
+ .write.saveAsTable("test_table")
Review comment:
I simplified it even a bit further
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