From cb39c97b22d159cc57a438ac4e684415d720e870 Mon Sep 17 00:00:00 2001
From: johncming <johncming@yahoo.com>
Date: Mon, 25 Mar 2019 10:53:24 +0800
Subject: [PATCH] clientv3/naming: ignore empty update.

---
 clientv3/naming/grpc.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clientv3/naming/grpc.go b/clientv3/naming/grpc.go
index c74659df2..7eed84bfb 100644
--- a/clientv3/naming/grpc.go
+++ b/clientv3/naming/grpc.go
@@ -98,6 +98,8 @@ func (gw *gRPCWatcher) Next() ([]*naming.Update, error) {
 		case etcd.EventTypeDelete:
 			err = json.Unmarshal(e.PrevKv.Value, &jupdate)
 			jupdate.Op = naming.Delete
+		default:
+			continue
 		}
 		if err == nil {
 			updates = append(updates, &jupdate)