diff --git a/src/backend/distributed/operations/rebalancer_placement_separation.c b/src/backend/distributed/operations/rebalancer_placement_separation.c
index f657cbbe5..a4085005f 100644
--- a/src/backend/distributed/operations/rebalancer_placement_separation.c
+++ b/src/backend/distributed/operations/rebalancer_placement_separation.c
@@ -201,6 +201,7 @@ InitRebalancerPlacementSeparationContext(RebalancerPlacementSeparationContext *c
 			continue;
 		}
 
+		/* node is of type S */
 		nodePlacementGroupHashEntry->hasPlacementsThatCannotBeMovedAway =
 			NodeGroupHasDistributedTableShardPlacements(
 				nodePlacementGroupHashEntry->nodeGroupId);