Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2025#discussion_r64367480
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/runtime/aggregate/AggregateMapFunction.scala
---
@@ -44,7 +44,7 @@ class AggregateMapFunction[IN, OUT](
override def map(value: IN): OUT = {
- val input = value.asInstanceOf[Row]
+ val input = value.asInstanceOf[Product]
--- End diff --
Currently aggregates do only support `Row`, because the aggregate code is
not generated yet.
`DataSetAggregate` enforces `Row` as input type (see `DataSetAggregate`
line 99), so `value.asInstanceOf[Row]` should be safe.
Did you observe a problem with this cast?
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