[Java知识库]SASL config status: Will not attempt to authenticate using SASL (unknown error)

报错：
org.apache.zookeeper.ClientCnxn$EndOfStreamException: Unable to read additional data from server sessionid 0x108e8afac8f0077, likely server has closed socket

报错：
org.apache.zookeeper.KeeperException$OperationTimeoutException: KeeperErrorCode = OperationTimeout

提示：
SASL config status: Will not attempt to authenticate using SASL (unknown error)

原因：
zookeeper默认使用了ZooKeeperSaslClient，而这个过程中调用了getHostName方法，从而造成程序阻塞。

解决方式一：
可以通过在hosts文件添加上zookeeper的ip地址，使得getHostName可以直接使用hosts里面的dns结果。

解决方式二：
主动关闭ZooKeeperSaslClient，直接在SpringBoot启动类加System.setProperty(“zookeeper.sasl.client”, “false”); 例子如下

@SpringBootApplication
public class TestApplication {
    public static void main(String[] args) {
        System.setProperty("zookeeper.sasl.client", "false");
        SpringApplication.run(TestApplication.class, args);
    }
}