etcdmain: add "--initial-election-tick-advance"

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

etcdmain/config.go

@@ -140,6 +140,7 @@ func newConfig() *config {
 	fs.Uint64Var(&cfg.ec.SnapCount, "snapshot-count", cfg.ec.SnapCount, "Number of committed transactions to trigger a snapshot to disk.")
 	fs.UintVar(&cfg.ec.TickMs, "heartbeat-interval", cfg.ec.TickMs, "Time (in milliseconds) of a heartbeat interval.")
 	fs.UintVar(&cfg.ec.ElectionMs, "election-timeout", cfg.ec.ElectionMs, "Time (in milliseconds) for an election to timeout.")
+	fs.BoolVar(&cfg.ec.InitialElectionTickAdvance, "initial-election-tick-advance", cfg.ec.InitialElectionTickAdvance, "Whether to fast-forward initial election ticks on boot for faster election.")
 	fs.Int64Var(&cfg.ec.QuotaBackendBytes, "quota-backend-bytes", cfg.ec.QuotaBackendBytes, "Raise alarms when backend size exceeds the given quota. 0 means use the default quota.")
 	fs.UintVar(&cfg.ec.MaxTxnOps, "max-txn-ops", cfg.ec.MaxTxnOps, "Maximum number of operations permitted in a transaction.")
 	fs.UintVar(&cfg.ec.MaxRequestBytes, "max-request-bytes", cfg.ec.MaxRequestBytes, "Maximum client request size in bytes the server will accept.")

etcdmain/help.go

@@ -54,6 +54,8 @@ member flags:
 		time (in milliseconds) of a heartbeat interval.
 	--election-timeout '1000'
 		time (in milliseconds) for an election to timeout. See tuning documentation for details.
+	--initial-election-tick-advance 'true'
+		whether to fast-forward initial election ticks on boot for faster election.
 	--listen-peer-urls 'http://localhost:2380'
 		list of URLs to listen on for peer traffic.
 	--listen-client-urls 'http://localhost:2379'