From 759005ec9aaf64ff599279a947d879d56bcc43a2 Mon Sep 17 00:00:00 2001
From: Ryan Leung <rleungx@gmail.com>
Date: Fri, 27 Dec 2019 16:57:04 +0800
Subject: [PATCH] address the comment

Signed-off-by: Ryan Leung <rleungx@gmail.com>
---
 server/server.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/server/server.go b/server/server.go
index 46ff1b14b98..279b9ce6cfb 100644
--- a/server/server.go
+++ b/server/server.go
@@ -986,6 +986,8 @@ func (s *Server) reloadConfigFromKV() error {
 		log.Info("server disable region storage")
 	}
 
+	// The request only valid when there is a leader.
+	// And before the a PD becomes a leader it will firstly reload the config.
 	if s.cfg.EnableConfigManager {
 		err = s.cfgManager.Reload(s.storage)
 		return err