WFLYCC0034: Closing leaked controller client -------------------------------------------- Key: WFCORE-1744 URL: https://issues.jboss.org/browse/WFCORE-1744 Project: WildFly Core Issue Type: Bug Affects Versions: 3.0.0.Alpha5 Reporter: Martin Choma Assignee: Jason Greene We are intermittently getting "WFLYCC0034: Closing leaked controller client" from RemotingModelControllerClient#finalize method. I wonder, isn't implementation of RemotingModelControllerClient#finalize() method [1] example of dangerous "safety net" implementation discussed in presentation "JVM finalize pitfalls" [2] ? [1] https://github.com/wildfly/wildfly-core/blob/master/controller-client/src... [2] https://www.youtube.com/watch?v=UrGP6pfb0H8 [3] {noformat} 05:54:10 Aug 16, 2016 5:54:10 AM org.jboss.as.controller.client.impl.RemotingModelControllerClient finalize 05:54:10 WARN: WFLYCC0034: Closing leaked controller client 05:54:10 WFLYCC0030: Allocation stack trace: 05:54:10 at java.lang.Thread.getStackTrace(Thread.java:1552) 05:54:10 at org.jboss.as.controller.client.impl.RemotingModelControllerClient.<init>(RemotingModelControllerClient.java:74) 05:54:10 at org.jboss.as.controller.client.ModelControllerClient$Factory.create(ModelControllerClient.java:567) 05:54:10 at org.wildfly.plugin.common.ManagementClient.<init>(ManagementClient.java:37) 05:54:10 at org.wildfly.plugin.common.AbstractServerConnection.createClient(AbstractServerConnection.java:126) 05:54:10 at org.wildfly.plugin.server.StartMojo.execute(StartMojo.java:269) 05:54:10 at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132) 05:54:10 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) 05:54:10 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) 05:54:10 at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) 05:54:10 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) 05:54:10 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) 05:54:10 at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) 05:54:10 at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120) 05:54:10 at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:355) 05:54:10 at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155) 05:54:10 at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584) 05:54:10 at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216) 05:54:10 at org.apache.maven.cli.MavenCli.main(MavenCli.java:160) 05:54:10 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 05:54:10 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 05:54:10 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 05:54:10 at java.lang.reflect.Method.invoke(Method.java:498) 05:54:10 at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) 05:54:10 at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) 05:54:10 at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) 05:54:10 at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) {noformat}