這個方法里面是根據ZOOKEEPER_SERVER_CNXN_FACTORY?來決定創建NIO?server還是Netty?Server

而默認情況下，應該是創建一個NIOServerCnxnFactory?

static public ServerCnxnFactory createFactory() throws IOException { String serverCnxnFactoryName = System.getProperty(ZOOKEEPER_SERVER_CNXN_FACTORY); if (serverCnxnFactoryName == null) { serverCnxnFactoryName = NIOServerCnxnFactory.class.getName(); } try { ServerCnxnFactory serverCnxnFactory = (ServerCnxnFactory) Class.forName(serverCnxnFactoryName).getDeclaredConstructor().newInstance(); LOG.info("Using {} as server connection factory", serverCnxnFactoryName); return serverCnxnFactory; } catch (Exception e) { IOException ioe = new IOException("Couldn't instantiate " + serverCnxnFactoryName); ioe.initCause(e); throw ioe; } }

?

總結

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