erikerlandson commented on issue #25024: [SPARK-27296][SQL] User Defined Aggregators that do not ser/de on each input row URL: https://github.com/apache/spark/pull/25024#issuecomment-544004757 @rdblue if what you mean is "get an encoder for a case class" that is actually pretty easy. I did a more complicated thing with `CountSerDe` because I needed to do the weird behavior of counting ser/de operations, which is normally transparent. ```scala // this should work for normal apps val encoder = Encoders.product[MyCaseClass] ```
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