From 8151d4d0bc23970932a96c3f5314ba66936d00f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=9C=E5=86=9B?= <dujun@dujundeMacBook-Pro.local>
Date: Tue, 20 Dec 2016 18:48:52 +0800
Subject: [PATCH] raft: make memory storage set method thread safe

---
 raft/storage.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/raft/storage.go b/raft/storage.go
index 57a525e39..69c3a7d90 100644
--- a/raft/storage.go
+++ b/raft/storage.go
@@ -98,6 +98,8 @@ func (ms *MemoryStorage) InitialState() (pb.HardState, pb.ConfState, error) {
 
 // SetHardState saves the current HardState.
 func (ms *MemoryStorage) SetHardState(st pb.HardState) error {
+	ms.Lock()
+	defer ms.Unlock()
 	ms.hardState = st
 	return nil
 }