From 50b83900475d92469b589fa29d7939fb4e3790dd Mon Sep 17 00:00:00 2001
From: disksing <i@disksing.com>
Date: Wed, 10 Jul 2019 18:49:25 +0800
Subject: [PATCH] txnkv: fix commit bug

Signed-off-by: disksing <i@disksing.com>
---
 txnkv/txn.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/txnkv/txn.go b/txnkv/txn.go
index 837661ae14..b6d851a05f 100644
--- a/txnkv/txn.go
+++ b/txnkv/txn.go
@@ -204,6 +204,9 @@ func (txn *Transaction) Commit(ctx context.Context) error {
 		if c := txn.us.LookupConditionPair(k); c != nil && c.ShouldNotExist() {
 			op = kvrpcpb.Op_Insert
 		}
+		if len(v) == 0 {
+			op = kvrpcpb.Op_Del
+		}
 		mutations[string(k)] = &kvrpcpb.Mutation{
 			Op:    op,
 			Key:   k,