diff --git a/src/backend/optimizer/plan/planner.c b/src/backend/optimizer/plan/planner.c
index 06ad856eac..a0f2390334 100644
--- a/src/backend/optimizer/plan/planner.c
+++ b/src/backend/optimizer/plan/planner.c
@@ -3900,7 +3900,8 @@ consider_groupingsets_paths(PlannerInfo *root,
 										  (List *) parse->havingQual,
 										  strat,
 										  new_rollups,
-										  agg_costs));
+										  agg_costs,
+										  dNumGroups));
 		return;
 	}
 
@@ -4058,7 +4059,8 @@ consider_groupingsets_paths(PlannerInfo *root,
 											  (List *) parse->havingQual,
 											  AGG_MIXED,
 											  rollups,
-											  agg_costs));
+											  agg_costs,
+											  dNumGroups));
 		}
 	}
 
@@ -4073,7 +4075,8 @@ consider_groupingsets_paths(PlannerInfo *root,
 										  (List *) parse->havingQual,
 										  AGG_SORTED,
 										  gd->rollups,
-										  agg_costs));
+										  agg_costs,
+										  dNumGroups));
 }
 
 /*
diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c
index 483c4f4137..e2a3c110ce 100644
--- a/src/backend/optimizer/util/pathnode.c
+++ b/src/backend/optimizer/util/pathnode.c
@@ -3158,6 +3158,7 @@ create_agg_path(PlannerInfo *root,
  * 'having_qual' is the HAVING quals if any
  * 'rollups' is a list of RollupData nodes
  * 'agg_costs' contains cost info about the aggregate functions to be computed
+ * 'numGroups' is the estimated total number of groups
  */
 GroupingSetsPath *
 create_groupingsets_path(PlannerInfo *root,
@@ -3166,7 +3167,8 @@ create_groupingsets_path(PlannerInfo *root,
 						 List *having_qual,
 						 AggStrategy aggstrategy,
 						 List *rollups,
-						 const AggClauseCosts *agg_costs)
+						 const AggClauseCosts *agg_costs,
+						 double numGroups)
 {
 	GroupingSetsPath *pathnode = makeNode(GroupingSetsPath);
 	PathTarget *target = rel->reltarget;
diff --git a/src/include/optimizer/pathnode.h b/src/include/optimizer/pathnode.h
index 635cc0a0a6..d2d46b15df 100644
--- a/src/include/optimizer/pathnode.h
+++ b/src/include/optimizer/pathnode.h
@@ -233,7 +233,8 @@ extern GroupingSetsPath *create_groupingsets_path(PlannerInfo *root,
 												  List *having_qual,
 												  AggStrategy aggstrategy,
 												  List *rollups,
-												  const AggClauseCosts *agg_costs);
+												  const AggClauseCosts *agg_costs,
+												  double numGroups);
 extern MinMaxAggPath *create_minmaxagg_path(PlannerInfo *root,
 											RelOptInfo *rel,
 											PathTarget *target,