snuyanzin commented on code in PR #20850:
URL: https://github.com/apache/flink/pull/20850#discussion_r993941510
##########
flink-table/flink-table-planner/src/test/resources/org/apache/flink/table/planner/catalog/JavaCatalogTableTest.xml:
##########
@@ -76,12 +75,11 @@ LogicalProject(EXPR$0=[$0])
</Resource>
<Resource name="optimized exec plan">
<![CDATA[
-GroupWindowAggregate(window=[TumblingGroupWindow('w, proctime, 600000)],
select=[COUNT($f3) AS EXPR$0])
+GroupWindowAggregate(window=[TumblingGroupWindow('w, proctime, 600000)],
select=[COUNT(*) AS EXPR$0])
Review Comment:
After debugging I found a reason for that. It is invoked by the change
within [1] . To be more precise by optimization within these lines in
_org.apache.calcite.tools.RelBuilder_ (line number 3402 - 3406)
```java
if (aggFunction instanceof SqlCountAggFunction && !distinct) {
args = args.stream()
.filter(r::fieldIsNullable)
.collect(Util.toImmutableList());
}
```
I did a double check for that: copied a class to Flink repo and commented
only this line and then no need to change rules (this, two below where you also
commented, and some more, full changeset [2]), ci for that is also green except
one non related Hive issue [3]
[1]
https://github.com/apache/calcite/commit/a680abe0528faacf8d284419c76c36bbc1a65aa3
[2]
https://github.com/snuyanzin/flink/commit/481543210509f682ac89ef3ce42d2f324937bbc4
[3]
https://dev.azure.com/snuyanzin/flink/_build/results?buildId=1450&view=results
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