From 56762268675807d229d31b660421bd3cb8c73465 Mon Sep 17 00:00:00 2001
From: Derek Chiang <derekchiang93@gmail.com>
Date: Wed, 18 Jan 2017 08:21:07 -0800
Subject: [PATCH] clientv3/concurrency: fix rev comparison on concurrent key
 deletion

---
 clientv3/concurrency/stm.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/clientv3/concurrency/stm.go b/clientv3/concurrency/stm.go
index 056ebfb75..83333b932 100644
--- a/clientv3/concurrency/stm.go
+++ b/clientv3/concurrency/stm.go
@@ -249,11 +249,10 @@ func (s *stmReadCommitted) commit() *v3.TxnResponse {
 }
 
 func isKeyCurrent(k string, r *v3.GetResponse) v3.Cmp {
-	rev := r.Header.Revision + 1
 	if len(r.Kvs) != 0 {
-		rev = r.Kvs[0].ModRevision + 1
+		return v3.Compare(v3.ModRevision(k), "=", r.Kvs[0].ModRevision)
 	}
-	return v3.Compare(v3.ModRevision(k), "<", rev)
+	return v3.Compare(v3.ModRevision(k), "=", 0)
 }
 
 func respToValue(resp *v3.GetResponse) string {