EnricoMi commented on a change in pull request #33545:
URL: https://github.com/apache/spark/pull/33545#discussion_r680673878
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File path: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
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@@ -701,6 +701,57 @@ class DatasetSuite extends QueryTest
1 -> "a", 2 -> "bc", 3 -> "d")
}
+ test("SPARK-34806: observation on datasets") {
+ val namedObservation = Observation("named")
+ val unnamedObservation = Observation()
+
+ val df = spark.range(100)
+ val observed_df = df
+ .observe(
+ namedObservation,
+ min($"id").as("min_val"),
+ max($"id").as("max_val"),
+ sum($"id").as("sum_val"),
Review comment:
Yes, It behaves identical to `Row.getValuesMap(Row.schema.fieldNames)`,
which drops all but the last occurrence of a column name.
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