aseychell commented on issue #314: Update zookeeper to 3.5.5 stable version URL: https://github.com/apache/curator/pull/314#issuecomment-523796888 From a thread dump on this hanging test, I have the following stack trace `"main" #1 prio=5 os_prio=0 cpu=327234.38ms elapsed=7654.60s tid=0x00000152c44d9800 nid=0xead8 in Object.wait() [0x0000000316dfe000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <no object reference available> at java.lang.Thread.join(java.base@11/Thread.java:1305) - waiting to re-lock in wait() <0x0000000711446058> (a org.apache.zookeeper.ClientCnxn$SendThread) at java.lang.Thread.join(java.base@11/Thread.java:1379) at org.apache.zookeeper.ClientCnxn.disconnect(ClientCnxn.java:1455) at org.apache.zookeeper.ClientCnxn.close(ClientCnxn.java:1485) at org.apache.zookeeper.ZooKeeper.close(ZooKeeper.java:1415) - locked <0x00000007115ffa98> (a org.apache.zookeeper.ZooKeeper) at org.apache.curator.HandleHolder.internalClose(HandleHolder.java:160) at org.apache.curator.HandleHolder.closeAndClear(HandleHolder.java:78) at org.apache.curator.ConnectionState.close(ConnectionState.java:125) at org.apache.curator.CuratorZookeeperClient.close(CuratorZookeeperClient.java:266) at org.apache.curator.CuratorZookeeperClient.close(CuratorZookeeperClient.java:249) at org.apache.curator.framework.imps.CuratorFrameworkImpl.close(CuratorFrameworkImpl.java:411) at org.apache.curator.shaded.com.google.common.io.Closeables.close(Closeables.java:78) at org.apache.curator.utils.CloseableUtils.closeQuietly(CloseableUtils.java:59) at org.apache.curator.framework.recipes.locks.TestLockACLs.testACLsCreatingParents(TestLockACLs.java:94) at jdk.internal.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base@11/DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(java.base@11/Method.java:566) at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124) at org.testng.internal.Invoker.invokeMethod(Invoker.java:583) at org.testng.internal.Invoker.retryFailed(Invoker.java:839) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1010) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109) at org.testng.TestRunner.privateRun(TestRunner.java:648) at org.testng.TestRunner.run(TestRunner.java:505) at org.testng.SuiteRunner.runTest(SuiteRunner.java:455) at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415) at org.testng.SuiteRunner.run(SuiteRunner.java:364) at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84) at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208) at org.testng.TestNG.runSuitesLocally(TestNG.java:1137) at org.testng.TestNG.runSuites(TestNG.java:1049) at org.testng.TestNG.run(TestNG.java:1017) at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:135) at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeSingleClass(TestNGDirectoryTestSuite.java:112) at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:99) at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:146) at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:383) at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:344) at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:417)`
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