From 64d06e8a897ee82ccf20daa6c21f0e913112f33c Mon Sep 17 00:00:00 2001
From: chenhw2 <honwen.chan@gmail.com>
Date: Mon, 21 Jan 2019 16:22:12 +0800
Subject: [PATCH] fix #279

---
 selector.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/selector.go b/selector.go
index e8d11e2..f6d2c14 100644
--- a/selector.go
+++ b/selector.go
@@ -174,7 +174,10 @@ func (f *FailFilter) Filter(nodes []Node) []Node {
 	}
 	nl := []Node{}
 	for i := range nodes {
-		marker := nodes[i].marker.Clone()
+		marker := &failMarker{}
+		if nil != nodes[i].marker {
+			marker = nodes[i].marker.Clone()
+		}
 		// log.Logf("%s: %d/%d %v/%v", nodes[i], marker.failCount, f.MaxFails, marker.failTime, f.FailTimeout)
 		if marker.failCount < uint32(f.MaxFails) ||
 			time.Since(time.Unix(marker.failTime, 0)) >= f.FailTimeout {