我有 2 个应用程序在其中service 1使用service 2复制service 2到 3 个实例中。Service 1连接到service 2使用spring-cloud-zookeeper-discovery.
应用程序按预期工作，直到我关闭其中一个实例service 2，服务实例的 ZNode 被 40 秒删除，我看到协商会话超时为 40 秒，但是我创建了另一个实例service 3，该实例具有相同的上次协商会话超时到 40 秒，但是service 3实例的 ZNode 在 1-2 秒内被删除。
以下是断开连接后的zookeeper服务器日志
2019-12-17 17:02:02,829 [myid:] - WARN [NIOWorkerThread-5:NIOServerCnxn@370] - Exception causing close of session 0x10005eb831b0000: An existing connection was forcibly closed by the remote host
2019-12-17 17:02:02,830 [myid:] - DEBUG [NIOWorkerThread-5:NIOServerCnxn@373] - IOException stack trace
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:197)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:321)
at org.apache.zookeeper.server.NIOServerCnxnFactory$IOWorkRequest.doWork(NIOServerCnxnFactory.java:530)
at org.apache.zookeeper.server.WorkerService$ScheduledWorkRequest.run(WorkerService.java:155)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2019-12-17 17:02:02,833 [myid:] - DEBUG [NIOWorkerThread-5:MBeanRegistry@127] - Unregister MBean [org.apache.ZooKeeperService:name0=StandaloneServer_port2181,name1=Connections,name2="0:0:0:0:0:0:0:1",name3=0x10005eb831b0000]
2019-12-17 17:02:02,834 [myid:] - DEBUG [NIOWorkerThread-5:NIOServerCnxn@627] - Closed socket connection for client /0:0:0:0:0:0:0:1:61987 which had sessionid 0x10005eb831b0000
2019-12-17 17:02:42,033 [myid:] - TRACE [SessionTracker:SessionTrackerImpl@213] - Session closing: 0x10005eb831b0000
2019-12-17 17:02:42,033 [myid:] - INFO [SessionTracker:ZooKeeperServer@398] - Expiring session 0x10005eb831b0000, timeout of 40000ms exceeded
2019-12-17 17:02:42,036 [myid:] - TRACE [ProcessThread(sid:0 cport:2181)::ZooTrace@88] - :Psessionid:0x10005eb831b0000 type:closeSession cxid:0x0 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a
2019-12-17 17:02:42,045 [myid:] - TRACE [ProcessThread(sid:0 cport:2181)::SessionTrackerImpl@213] - Session closing: 0x10005eb831b0000
2019-12-17 17:02:42,055 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@99] - Processing request:: sessionid:0x10005eb831b0000 type:closeSession cxid:0x0 zxid:0x2d txntype:-11 reqpath:n/a
2019-12-17 17:02:42,058 [myid:] - TRACE [SyncThread:0:ZooTrace@88] - :Esessionid:0x10005eb831b0000 type:closeSession cxid:0x0 zxid:0x2d txntype:-11 reqpath:n/a
2019-12-17 17:02:42,060 [myid:] - DEBUG [SyncThread:0:DataTree@1052] - Deleting ephemeral node /services/kp-services/0696aa59-918a-4b7c-b80c-a26aaed55e2f for session 0x10005eb831b0000
2019-12-17 17:02:42,068 [myid:] - DEBUG [SyncThread:0:DataTree@1052] - Deleting ephemeral node /kp/leader/cluster/_c_6d664f66-5eae-450f-b9e4-a1d0f3b7c8c3-lock-0000000000 for session 0x10005eb831b0000
2019-12-17 17:02:42,071 [myid:] - DEBUG [SyncThread:0:SessionTrackerImpl@223] - Removing session 0x10005eb831b0000
2019-12-17 17:02:42,082 [myid:] - TRACE [SyncThread:0:ZooTrace@71] - SessionTrackerImpl --- Removing session 0x10005eb831b0000
2019-12-17 17:02:50,175 [myid:] - DEBUG [Session-HouseKeeper-1f36e637:HouseKeeper@264] - node0 scavenging sessions
2019-12-17 17:02:50,177 [myid:] - DEBUG [Session-HouseKeeper-1f36e637:SessionHandler@1344] - org.eclipse.jetty.server.session.SessionHandler1529306539==dftMaxIdleSec=-1 scavenging sessions
2019-12-17 17:02:50,186 [myid:] - DEBUG [Session-HouseKeeper-1f36e637:SessionHandler@1352] - org.eclipse.jetty.server.session.SessionHandler1529306539==dftMaxIdleSec=-1 scavenging session ids []
2019-12-17 17:02:50,194 [myid:] - DEBUG [Session-HouseKeeper-1f36e637:AbstractSessionCache@647] - org.eclipse.jetty.server.session.DefaultSessionCache@185d8b6[evict=-1,removeUnloadable=false,saveOnCreate=false,saveOnInactiveEvict=false] checking expiration on []
2019-12-17 17:02:50,659 [myid:] - INFO [ContainerManagerTask:ContainerManager@119] - Attempting to delete candidate container: /services/kp-services
2019-12-17 17:02:50,659 [myid:] - TRACE [ProcessThread(sid:0 cport:2181)::ZooTrace@88] - :Psessionid:0x0 type:deleteContainer cxid:0x0 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a
2019-12-17 17:02:50,666 [myid:] - INFO [ContainerManagerTask:ContainerManager@119] - Attempting to delete candidate container: /kp/leader/cluster
2019-12-17 17:02:50,670 [myid:] - TRACE [ProcessThread(sid:0 cport:2181)::ZooTrace@88] - :Psessionid:0x0 type:deleteContainer cxid:0x0 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a
2019-12-17 17:02:50,671 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@99] - Processing request:: sessionid:0x0 type:deleteContainer cxid:0x0 zxid:0x2e txntype:20 reqpath:n/a
2019-12-17 17:02:50,682 [myid:] - TRACE [SyncThread:0:ZooTrace@88] - :Esessionid:0x0 type:deleteContainer cxid:0x0 zxid:0x2e txntype:20 reqpath:n/a
2019-12-17 17:02:50,686 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@99] - Processing request:: sessionid:0x0 type:deleteContainer cxid:0x0 zxid:0x2f txntype:20 reqpath:n/a
2019-12-17 17:02:50,696 [myid:] - TRACE [SyncThread:0:ZooTrace@88] - :Esessionid:0x0 type:deleteContainer cxid:0x0 zxid:0x2f txntype:20 reqpath:n/a
版本信息
zookeeper：3.5.5
spring-cloud-zookeeper-discovery：2.0.1
策展人：4.2.0