zkServer.setTxnLogFactory(txnLog);
zkServer.setTickTime(sc.getTickTime());
zkServer.setMinSessionTimeout(sc.getMinSessionTimeout());
zkServer.setMaxSessionTimeout(sc.getMaxSessionTimeout());
ServerCnxnFactory cnxnFactory = ServerCnxnFactory.createFactory();
cnxnFactory.configure(sc.getClientPortAddress(),
sc.getMaxClientCnxns());
cnxnFactory.startup(zkServer);
return cnxnFactory;
} catch (InterruptedException e) {
throw new RuntimeException(e);