cloud-fan commented on code in PR #49416:
URL: https://github.com/apache/spark/pull/49416#discussion_r1908153913
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sql/core/src/test/scala/org/apache/spark/sql/execution/InsertSortForLimitAndOffsetSuite.scala:
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@@ -110,11 +111,21 @@ class InsertSortForLimitAndOffsetSuite extends QueryTest
}
test("middle OFFSET preserves data ordering with the extra sort") {
- val df = spark.range(10).orderBy($"id" % 8).offset(2).distinct()
- df.collect()
- val physicalPlan = df.queryExecution.executedPlan
+ val df = 1.to(10).map(v => v -> v).toDF("c1", "c2").orderBy($"c1" % 8)
+ verifySortAdded(df.offset(2))
+ verifySortAdded(df.filter($"c2" > rand()).offset(2))
+ verifySortAdded(df.select($"c2").offset(2))
+ verifySortAdded(df.filter($"c2" > rand()).select($"c2").offset(2))
Review Comment:
I'm worried that deterministic filters will be pushed into LocalRelation and
get optimized out.
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