etcdserver: add more tick fast-forward logs

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

etcdserver/config.go

@@ -293,6 +293,7 @@ func (c *ServerConfig) print(initial bool) {
 			zap.String("heartbeat-interval", fmt.Sprintf("%v", time.Duration(c.TickMs)*time.Millisecond)),
 			zap.Int("election-tick-ms", c.ElectionTicks),
 			zap.String("election-timeout", fmt.Sprintf("%v", time.Duration(c.ElectionTicks*int(c.TickMs))*time.Millisecond)),
+			zap.Bool("initial-election-tick-advance", c.InitialElectionTickAdvance),
 			zap.Uint64("snapshot-count", c.SnapCount),
 			zap.Strings("advertise-client-urls", c.getACURLs()),
 			zap.Strings("initial-advertise-peer-urls", c.getAPURLs()),

etcdserver/server.go

@@ -636,8 +636,14 @@ func (s *EtcdServer) adjustTicks() {
 	}
 
 	if !s.Cfg.InitialElectionTickAdvance {
+		if lg != nil {
+			lg.Info("skipping initial election tick advance", zap.Int("election-ticks", s.Cfg.ElectionTicks))
+		}
 		return
 	}
+	if lg != nil {
+		lg.Info("starting initial election tick advance", zap.Int("election-ticks", s.Cfg.ElectionTicks))
+	}
 
 	// retry up to "rafthttp.ConnReadTimeout", which is 5-sec
 	// until peer connection reports; otherwise: