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https://issues.apache.org/jira/browse/CURATOR-554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jordan Zimmerman closed CURATOR-554.
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Fix Version/s: (was: awaiting-response)
Resolution: Not A Problem
> restart zk , task in thread "Curator-ConnectionStateManager-0" stop
> ,leaderLatch failed
> ---------------------------------------------------------------------------------------
>
> Key: CURATOR-554
> URL: https://issues.apache.org/jira/browse/CURATOR-554
> Project: Apache Curator
> Issue Type: Bug
> Components: Framework
> Affects Versions: 4.0.1, 4.2.0
> Reporter: zengqingdong
> Priority: Major
>
> stop zk ，after two minutes restart it.
> the thread in ConnectionStateManager named "Curator-ConnectionStateManager-0"
> break out the dead Loop.
> code : org.apache.curator.framework.state.ConnectionStateManager#start
> the task stopped and would not restasrt ,so that when a new connectionState
> (such as reconnect) coming , there would no any response.
> it will lead to leaderLatch failed.
>
> ————————————————————————————————————————
>
> Hi,all
> I have already resolved this problem , it caused by version compatibility
> .I uesd zookeeper-client- 3.5.1.jar and curaot-framwork-4.1.0.jar .
> while the JVM initializing static block in class
> org.apache.curator.utils.Compatibility ,it throw a error,but not Exception!
>
> -----------------------------------------------------------
>
> 2020-01-10T04:33:27,568|ERROR|Curator-ConnectionStateManager-0|org.apache.curator.framework.state.ConnectionStateManager|Could
> not inject session expiration
> java.lang.ExceptionInInitializerError: null
> at
> org.apache.curator.utils.Compatibility.injectSessionExpiration(Compatibility.java:66)
> ~[curator-client-4.1.0.jar:?]
> at
> org.apache.curator.framework.state.ConnectionStateManager.checkSessionExpiration(ConnectionStateManager.java:315)
> [curator-framework-4.1.0.jar:4.1.0]
> at
> org.apache.curator.framework.state.ConnectionStateManager.processEvents(ConnectionStateManager.java:287)
> [curator-framework-4.1.0.jar:4.1.0]
> at
> org.apache.curator.framework.state.ConnectionStateManager.access$000(ConnectionStateManager.java:45)
> [curator-framework-4.1.0.jar:4.1.0]
> at
> org.apache.curator.framework.state.ConnectionStateManager$1.call(ConnectionStateManager.java:121)
> [curator-framework-4.1.0.jar:4.1.0]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_201]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> [?:1.8.0_201]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> [?:1.8.0_201]
> at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
> Caused by: java.lang.RuntimeException: Could not access internal ZooKeeper
> fields
> at
> org.apache.curator.utils.InjectSessionExpiration.<clinit>(InjectSessionExpiration.java:75)
> ~[curator-client-4.1.0.jar:?]
> ... 9 more
> Caused by: java.lang.NoSuchMethodException:
> org.apache.zookeeper.ClientCnxnSocket.wakeupCnxn()
> at java.lang.Class.getDeclaredMethod(Class.java:2130) ~[?:1.8.0_201]
> at
> org.apache.curator.utils.InjectSessionExpiration.<clinit>(InjectSessionExpiration.java:70)
> ~[curator-client-4.1.0.jar:?]
> ... 9 more
> ------------------------------------------------------------------------------
>
> I change the code “catch Exception ” to "catch throwable"，and the error
> finnaly appeared .
>
> the error made my Curator-ConnectionStateManager-0 down , so that my
> appliacation can not known th reconnect of zk!
>
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