Hi guys,
I have a strange problem:
I have created a new plugin that provides a cloud implementation.
I create new nodes/computers and connect them using JNLP.
The first time a job runs on the newly created computer it fails with that
log output:
```
FATAL: Remote call on JNLP4-connect connection from localhost/127.0.0.1:47026
failed
Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to
JNLP4-connect connection to localhost/127.0.0.1:44145
at
hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
at hudson.remoting.Request.call(Request.java:202)
at
hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:286)
at com.sun.proxy.$Proxy6.fetch(Unknown Source)
at
hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:315)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at hudson.util.ProcessTree.get(ProcessTree.java:399)
at
hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1090)
at
hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1081)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
java.lang.ClassNotFoundException: javax.servlet.ServletException
at
hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch(RemoteClassLoader.java:808)
at sun.reflect.GeneratedMethodAccessor209.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:929)
at hudson.remoting.Request$2.run(Request.java:369)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at
org.jenkinsci.remoting.CallableDecorator.call(CallableDecorator.java:19)
at
hudson.remoting.CallableDecoratorList$1.call(CallableDecoratorList.java:21)
at
jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at
jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to
JNLP4-connect connection from localhost/127.0.0.1:47026
at
hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
at
hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357)
at hudson.remoting.Channel.call(Channel.java:955)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1078)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
at hudson.model.Run.execute(Run.java:1798)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at
hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Caused: java.lang.NoClassDefFoundError: javax/servlet/ServletException
at hudson.util.ProcessTree.get(ProcessTree.java:399)
at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1090)
at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1081)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at java.lang.Thread.run(Thread.java:748)
Caused: java.io.IOException: Remote call on JNLP4-connect connection from
localhost/127.0.0.1:47026 failed
at hudson.remoting.Channel.call(Channel.java:961)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1078)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
at hudson.model.Run.execute(Run.java:1798)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE
FATAL: Remote call on JNLP4-connect connection from localhost/127.0.0.1:47026
failed
Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to
JNLP4-connect connection to localhost/127.0.0.1:44145
at
hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
at hudson.remoting.Request.call(Request.java:202)
at
hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:286)
at com.sun.proxy.$Proxy6.fetch(Unknown Source)
at
hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:315)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at hudson.util.ProcessTree.get(ProcessTree.java:399)
at
hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1090)
at
hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1081)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
java.lang.ClassNotFoundException: javax.servlet.ServletException
at
hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch(RemoteClassLoader.java:808)
at sun.reflect.GeneratedMethodAccessor209.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:929)
at hudson.remoting.Request$2.run(Request.java:369)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at
org.jenkinsci.remoting.CallableDecorator.call(CallableDecorator.java:19)
at
hudson.remoting.CallableDecoratorList$1.call(CallableDecoratorList.java:21)
at
jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at
jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to
JNLP4-connect connection from localhost/127.0.0.1:47026
at
hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
at
hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357)
at hudson.remoting.Channel.call(Channel.java:955)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1078)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
at hudson.model.Run.execute(Run.java:1798)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at
hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Caused: java.lang.NoClassDefFoundError: javax/servlet/ServletException
at hudson.util.ProcessTree.get(ProcessTree.java:399)
at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1090)
at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1081)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at java.lang.Thread.run(Thread.java:748)
Caused: java.io.IOException: Remote call on JNLP4-connect connection from
localhost/127.0.0.1:47026 failed
at hudson.remoting.Channel.call(Channel.java:961)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1078)
at
hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
at hudson.model.Run.execute(Run.java:1798)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE
```
I tried to debug it further and could narrow it down.
I think the exception is thrown the first time in the Method
hudson.util.ProcessTree#get() (Line 399).
Probably calling "SlaveComputer.getChannelToMaster()" fails.
SlaveComputer references javax.servlet.ServletException which seems to be
unavailable there.
The agent.jar that is downloaded from Jenkins does *not* contain the
javax.servlet.ServletException class.
Running the job a second time on the same computer works just fine.
The exception occurs after the job has finished.
Any idea how to solve that?
Regards,
Johannes
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