add err message if <rsrc>/<name> pairs specified under --local

pkg/kubectl/cmd/set/set_selector.go

@@ -134,6 +134,13 @@ func (o *SelectorOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args [
 		o.builder = o.builder.
 			ResourceTypeOrNameArgs(o.all, o.resources...).
 			Latest()
+	} else {
+		// if a --local flag was provided, and a resource was specified in the form
+		// <resource>/<name>, fail immediately as --local cannot query the api server
+		// for the specified resource.
+		if len(o.resources) > 0 {
+			return resource.LocalResourceError
+		}
 	}
 
 	o.PrintObject = func(obj runtime.Object) error {