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The following commit(s) were added to refs/heads/main by this push:
new 2a9ce6c382 [CALCITE-6089] EnumerableSortedAggregate fails with
ClassCastException: class X cannot be cast to class
org.apache.calcite.runtime.FlatLists$ComparableList
2a9ce6c382 is described below
commit 2a9ce6c38270b654b3e32380a64576e29189cfc2
Author: 1fanwang <[email protected]>
AuthorDate: Wed Aug 26 01:03:37 2026 -0400
[CALCITE-6089] EnumerableSortedAggregate fails with ClassCastException:
class X cannot be cast to class
org.apache.calcite.runtime.FlatLists$ComparableList
Signed-off-by: 1fanwang <[email protected]>
---
.../enumerable/EnumerableSortedAggregateTest.java | 28 ++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git
a/core/src/test/java/org/apache/calcite/test/enumerable/EnumerableSortedAggregateTest.java
b/core/src/test/java/org/apache/calcite/test/enumerable/EnumerableSortedAggregateTest.java
index 6b188b3b35..9cc977544d 100644
---
a/core/src/test/java/org/apache/calcite/test/enumerable/EnumerableSortedAggregateTest.java
+++
b/core/src/test/java/org/apache/calcite/test/enumerable/EnumerableSortedAggregateTest.java
@@ -74,6 +74,34 @@ public class EnumerableSortedAggregateTest {
.throws_("There are not enough rules to produce a node with desired
properties");
}
+ /** Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6089";>[CALCITE-6089]
+ * EnumerableSortedAggregate fails with ClassCastException: class X cannot be
+ * cast to class org.apache.calcite.runtime.FlatLists$ComparableList</a>. */
+ @Test void sortedAggCountUnionRejectsEmptyGroupSet() {
+ tester(false, new HrSchema())
+ .query("select count(*) as c from ( "
+ + "select * from emps where deptno=10 "
+ + "union all "
+ + "select * from emps where deptno=20)")
+ .withHook(Hook.PLANNER, (Consumer<RelOptPlanner>) planner -> {
+ planner.removeRule(EnumerableRules.ENUMERABLE_AGGREGATE_RULE);
+ planner.addRule(EnumerableRules.ENUMERABLE_SORTED_AGGREGATE_RULE);
+ })
+ .throws_("There are not enough rules to produce a node with desired
properties");
+ }
+
+ /** As {@link #sortedAggCountUnionRejectsEmptyGroupSet()}, but with the
+ * default rules. */
+ @Test void sortedAggCountUnion() {
+ tester(false, new HrSchema())
+ .query("select count(*) as c from ( "
+ + "select * from emps where deptno=10 "
+ + "union all "
+ + "select * from emps where deptno=20)")
+ .returnsOrdered("c=4");
+ }
+
@Test void sortedAggTwoGroupKeys() {
tester(false, new HrSchema())
.query(
