Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/4199#discussion_r125003218
--- Diff:
flink-libraries/flink-table/src/main/java/org/apache/calcite/sql/fun/SqlGroupFunction.java
---
@@ -50,7 +50,8 @@
* GROUP BY HOP(rowtime, INTERVAL '1' HOUR), productId
* </pre></blockquote>
*/
-class SqlGroupFunction extends SqlFunction {
+// FLINK QUICK FIX
+public class SqlGroupFunction extends SqlFunction {
--- End diff --
Yes, I will open a issue and PR for Calcite today. I think visibility
changes should not be a big problem for the Calcite folks.
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