diff --git a/internal/distributed/rootcoord/service.go b/internal/distributed/rootcoord/service.go
index b9a7658345..1b31e1b16d 100644
--- a/internal/distributed/rootcoord/service.go
+++ b/internal/distributed/rootcoord/service.go
@@ -296,6 +296,7 @@ func (s *Server) ShowCollections(ctx context.Context, in *milvuspb.ShowCollectio
 	return s.rootCoord.ShowCollections(ctx, in)
 }
 
+// CreatePartition creates a partition in a collection
 func (s *Server) CreatePartition(ctx context.Context, in *milvuspb.CreatePartitionRequest) (*commonpb.Status, error) {
 	return s.rootCoord.CreatePartition(ctx, in)
 }