diff --git a/internal/querycoord/impl.go b/internal/querycoord/impl.go
index 2fe789910e..aa898ab164 100644
--- a/internal/querycoord/impl.go
+++ b/internal/querycoord/impl.go
@@ -278,6 +278,7 @@ func (qc *QueryCoord) ShowPartitions(ctx context.Context, req *querypb.ShowParti
 	}, nil
 }
 
+// LoadPartition loads all the sealed segments of this partition to queryNodes, and assigns watchDmChannelRequest to queryNodes
 func (qc *QueryCoord) LoadPartitions(ctx context.Context, req *querypb.LoadPartitionsRequest) (*commonpb.Status, error) {
 	collectionID := req.CollectionID
 	partitionIDs := req.PartitionIDs