From dd6e579b844e2beaac5fff4bc71027f9cc398dea Mon Sep 17 00:00:00 2001
From: caoming <johncming@yahoo.com>
Date: Wed, 19 Sep 2018 09:29:48 +0800
Subject: [PATCH] raftexample: use Rlock instead of Lock in getsnapshot

---
 contrib/raftexample/kvstore.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/contrib/raftexample/kvstore.go b/contrib/raftexample/kvstore.go
index f780acc59..b56dcb31a 100644
--- a/contrib/raftexample/kvstore.go
+++ b/contrib/raftexample/kvstore.go
@@ -95,8 +95,8 @@ func (s *kvstore) readCommits(commitC <-chan *string, errorC <-chan error) {
 }
 
 func (s *kvstore) getSnapshot() ([]byte, error) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	return json.Marshal(s.kvStore)
 }