Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/5940#discussion_r185955967
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/AggregationCodeGenerator.scala
---
@@ -641,7 +641,8 @@ class AggregationCodeGenerator(
| java.util.Map.Entry entry = (java.util.Map.Entry)
mergeIt$i.next();
| Object k = entry.getKey();
| Long v = (Long) entry.getValue();
- | if (aDistinctAcc$i.add(k, v)) {
+ | if (aDistinctAcc$i.add(
--- End diff --
The key in the entry is a `Row` already
---
