Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/1856#discussion_r60620452
--- Diff:
flink-java/src/main/java/org/apache/flink/api/java/functions/SelectByMinFunction.java
---
@@ -48,7 +49,7 @@ public SelectByMinFunction(TupleTypeInfo<T> type, int...
fields) {
}
// Check whether type is comparable
- if (!type.getTypeAt(field).isKeyType()) {
+ if
(!((TupleTypeInfo)type).getTypeAt(field).isKeyType()) {
--- End diff --
Scala tuple types are not of type `TupleTypeInfo` but instead
`TupleTypeInfoBase`.
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