From c3fe04f2e1e2d11a18e39780f23a6b0fcc1b26d0 Mon Sep 17 00:00:00 2001
From: Yilun <zyl.skysniper@gmail.com>
Date: Wed, 12 Sep 2018 22:51:28 -0700
Subject: [PATCH] Prevent node from adding self to successor list when joining

Signed-off-by: Yilun <zyl.skysniper@gmail.com>
---
 net/chord/chord.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/net/chord/chord.go b/net/chord/chord.go
index b2c8d26e5..6c31c44b5 100644
--- a/net/chord/chord.go
+++ b/net/chord/chord.go
@@ -216,8 +216,13 @@ func Join(conf *Config, trans Transport, existing string) (*Ring, error) {
 		}
 
 		// Assign the successors
+		skip := 0
 		for idx, s := range succs {
-			vn.successors[idx] = s
+			if s != nil && s.String() != vn.String() {
+				vn.successors[idx-skip] = s
+			} else {
+				skip++
+			}
 		}
 	}