ZKClient框架中ZooKeeper只注册了类ZkClient(实现了Watcher),由ZkClient统一处理WatchedEvent,根据WatchedEvent分发到三种情况的处理方法,处理方法在寻找到监听器后会将他send到ZkEventThread的BlockingQueue中,由ZkEventThread以线程的方式执行(个人觉得这个部分写的还是挺精巧的)。 zkClient将一次性watcher包装为持久watcher。...
1)在session timeout之内连接成功 这个时候client成功切换到连接另一个provider例如是provider2,由于zk在所有的provider上同步了session相关的数据,此时可以认为无缝迁移了。 2)在session timeout之内没有重新连接 这就是session expire的情况,这时候zookeeper集群会任务会话已经结束,并清除和这个session有关的所有数据,包括...
Client session timed out, have not heard from server in 154339ms for sessionid 0x13a3f7732340003 ... Client session timed out, have not heard from server in 167805ms for sessionid 0x13a3f7732340000 ... 我们循着这个异常定位到:ClientCnxn.java 又看到zk存在如下信息: Established session 0x13a3f7...
Opening socket connection to server 192.168.1.157/192.168.1.157:2181. Will not attempt to authenticate using SASL (unknown error) 2018-01-05 14:20:43,073 [org.apache.zookeeper.ClientCnxn]-[INFO] Client session timed out, have not heard from server in 9014ms for sessionid 0x0, closing socket...
jobmanager和taskmanager是用akka通信,修改参数akka.ask.timeout: 240s。 这些操作之后,偶尔还是会在加载缓存的时候发现异常,日志截取如下 2020-10-1617:05:05,939WARN org.apache.flink.shaded.zookeeper.org.apache.zookeeper.ClientCnxn - Client session timed out, have not heardfromserver in29068msforsessionid...
publicClientCnxn(String chrootPath, HostProvider hostProvider,intsessionTimeout, ZooKeeper zooKeeper, ClientWatchManager watcher, ClientCnxnSocket clientCnxnSocket,longsessionId,byte[] sessionPasswd,booleancanBeReadOnly){ 可以看到ClientCnxn的构造器中有一个非常重要的参数是ClientCnxnSocket,这也是client和server建立连...
Hi, I noticed an issue where the go-zookeeper client will not reset the session if the Zookeeper cluster loses it's session state (instance reset, redeploy, etc) and the server responds with an EOF. When this happens the client enters an endless loop trying to authenticate with the previous...
while(state.isAlive()){try{...if(to<=0){String warnInfo;warnInfo="Client session timed out, have not heard from server in "+clientCnxnSocket.getIdleRecv()+"ms"+" for sessionid 0x"+Long.toHexString(sessionId);LOG.warn(warnInfo);thrownewSessionTimeoutException(warnInfo);}}catch(Throwable...
.sessionTimeoutMs(5000) // 会话超时时间 .connectionTimeoutMs(5000) // 连接超时时间 .retryPolicy(retryPolicy) .namespace("base") // 包含隔离名称 .build(); client.start(); 在定义 CuratorFramework 对象实例的时候,我们使用了 CuratorFrameworkFactory 工厂方法,下面我们来看下其关键信息: ...
privateCuratorFrameworkzkClient;publicvoidsetZkHosts(StringzkHosts){this.zkHosts=zkHosts;}publicvoidsetSessionTimeout(intsessionTimeout){this.sessionTimeout=sessionTimeout;}publicvoidsetConnectionTimeout(intconnectionTimeout){this.connectionTimeout=connectionTimeout;}publicvoidsetSingleton(booleansingleton){...