Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/22284#discussion_r214270194
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/metric/SQLMetricsSuite.scala
---
@@ -497,6 +497,17 @@ class SQLMetricsSuite extends SparkFunSuite with
SQLMetricsTestUtils with Shared
}
}
+ test("SPARK-25278: output metrics are wrong for plans repeated in the
query") {
+ val name = "demo_view"
+ sql(s"CREATE OR REPLACE VIEW $name AS VALUES 1,2")
+ val view = spark.table(name)
+ val union = view.union(view)
+ testSparkPlanMetrics(union, 1, Map(
+ 0L -> ("Union" -> Map()),
+ 1L -> ("LocalTableScan" -> Map("number of output rows" -> 2L)),
+ 2L -> ("LocalTableScan" -> Map("number of output rows" -> 2L))))
+ }
+
--- End diff --
yes, I am adding a test to the `PlannerSuite` which ensures that plans are
different instances. Thanks.
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