Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/5555#discussion_r184036079
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/AggregationCodeGenerator.scala
---
@@ -151,8 +157,36 @@ class AggregationCodeGenerator(
}
}
- // initialize and create data views
- addReusableDataViews()
+ // get distinct filter of acc fields for each aggregate functions
+ val distinctAccType = s"${classOf[DistinctAccumulator[_, _]].getName}"
+
+ val distinctAggs: Array[Seq[DataViewSpec[_]]] =
isDistinctAggs.zipWithIndex.map {
+ case (isDistinctAgg, idx) => if (isDistinctAgg) {
+ val fieldIndex: Int = aggFields(idx)(0)
--- End diff --
Add a safety check that `aggFields(idx).length == 1`
---
