Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/21732#discussion_r203891595 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetAggregatorSuite.scala --- @@ -183,6 +184,43 @@ case class OptionBooleanAggregator(colName: String) def OptionalBoolEncoder: Encoder[Option[Boolean]] = ExpressionEncoder() } +case class OptionBooleanIntAggregator(colName: String) + extends Aggregator[Row, Option[(Boolean, Int)], Option[(Boolean, Int)]] { --- End diff -- For a non top-level encoder, the output schema of `Option[Product]` should be struct column.
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