cloud-fan commented on a change in pull request #28983:
URL: https://github.com/apache/spark/pull/28983#discussion_r450873817
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/udaf.scala
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@@ -469,7 +471,8 @@ case class ScalaAggregator[IN, BUF, OUT](
with ImplicitCastInputTypes
with Logging {
- private[this] lazy val inputDeserializer =
inputEncoderNR.resolveAndBind().createDeserializer()
+ // input encoder is resolved by ResolveEncodersInScalaAgg
+ private[this] lazy val inputDeserializer = inputEncoder.createDeserializer()
private[this] lazy val bufferEncoder =
agg.bufferEncoder.asInstanceOf[ExpressionEncoder[BUF]].resolveAndBind()
Review comment:
shall we do the same thing for `bufferEncoder`? we may need to put
buffer encoder as a parameter of `ScalaAggregator`
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