From de2081fa1951eae079954f0a33068beccf2549dd Mon Sep 17 00:00:00 2001
From: Chanwit Kaewkasi <chanwit@gmail.com>
Date: Tue, 6 Jan 2015 19:09:00 +0700
Subject: [PATCH] skip ErrNodeExists for node registration

Signed-off-by: Chanwit Kaewkasi <chanwit@gmail.com>
---
 discovery/zookeeper/zookeeper.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/discovery/zookeeper/zookeeper.go b/discovery/zookeeper/zookeeper.go
index d02cdf544d..292d766830 100644
--- a/discovery/zookeeper/zookeeper.go
+++ b/discovery/zookeeper/zookeeper.go
@@ -76,5 +76,9 @@ func (s *ZkDiscoveryService) Watch(callback discovery.WatchCallback) {
 
 func (s *ZkDiscoveryService) Register(addr string) error {
 	_, err := s.conn.Create(path.Join(s.path, "/"+addr), []byte(addr), 0, zk.WorldACL(zk.PermAll))
-	return err
+	if err != zk.ErrNodeExists {
+		return err
+	} else {
+		return nil
+	}
 }