Jenkins Slave 抛出“禁用系统类加载器的类加载”例外
在从实例（AIX 5.3 上的主实例；Windows 2008(R2) 上的从实例）上运行 Maven2 作业时，我收到以下消息（完整的堆栈跟踪粘贴在下面）：“java.lang.ClassNotFoundException：禁用从系统类加载器加载类”。从属实例启动后的第一个作业（它作为 Windows 服务运行）会发生这种情况。之后，我收到“java.lang.NoClassDefFoundError：无法初始化类 hudson.maven.MavenModuleSetBuild”错误。
如果我创建一个自由式作业，并将 maven 命令作为批处理命令包含在从属设备上运行，则它可以正常工作。 Maven2 作业似乎在从机上找到 Maven，但它显然找不到 maven-plugin（可能是由于类加载错误）。
我已经搜索并发布了 jenkins-ci 网站的票证，但到目前为止还没有运气。有人遇到过这个问题吗？
Stacktrace:
Found mavenVersion 2.2.1 from file jar:file:/C:/apache-maven-2.2.1/lib/maven-2.2.1-uber.jar!/META-INF/maven/org.apache.maven/maven-core/pom.properties
Parsing POMs
ERROR: Failed to parse POMs
hudson.util.IOException2: remote file operation failed: c:\jenkins-slave\workspace\AO_SISO_AT-smoketest-CIT1 at hudson.remoting.Channel@7b827b82:10.40.163.105
at hudson.FilePath.act(FilePath.java:752)
at hudson.FilePath.act(FilePath.java:738)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.parsePoms(MavenModuleSetBuild.java:817)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:617)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:429)
at hudson.model.Run.run(Run.java:1374)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:467)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:145)
Caused by: java.io.IOException: Remote call on 10.40.163.105 failed
at hudson.remoting.Channel.call(Channel.java:652)
at hudson.FilePath.act(FilePath.java:745)
... 8 more
Caused by: java.lang.ExceptionInInitializerError
at hudson.maven.MavenModuleSetBuild$PomParser.invoke(MavenModuleSetBuild.java:1236)
at hudson.maven.MavenModuleSetBuild$PomParser.invoke(MavenModuleSetBuild.java:1110)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:1956)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:270)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1$1.run(Engine.java:60)
at java.lang.Thread.run(Unknown Source)
Caused by: com.thoughtworks.xstream.XStream$InitializationException: Could not instantiate converter : com.thoughtworks.xstream.converters.extended.DurationConverter : null
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:735)
at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:699)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:445)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:385)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:323)
at hudson.util.XStream2.<init>(XStream2.java:62)
at hudson.model.Run.<clinit>(Run.java:1867)
... 13 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:728)
... 19 more
Caused by: javax.xml.datatype.DatatypeConfigurationException: Provider org.apache.xerces.jaxp.datatype.DatatypeFactoryImpl not found
at javax.xml.datatype.DatatypeFactory.newInstance(Unknown Source)
at com.thoughtworks.xstream.converters.extended.DurationConverter.<init>(DurationConverter.java:33)
... 24 more
Caused by: java.lang.ClassNotFoundException: Classloading from system classloader disabled
at java.lang.Throwable.<init>(Throwable.java:56)
at java.lang.Throwable.<init>(Throwable.java:80)
at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:80)
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch2(RemoteClassLoader.java:399)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:274)
at hudson.remoting.Request$2.run(Request.java:270)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:432)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:284)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:799)
When running a Maven2 job on a slave instance (Master on AIX 5.3; slave on Windows 2008(R2)), I get the following message (complete stack trace pasted in below): "java.lang.ClassNotFoundException: Classloading from system classloader disabled". This happens with the first job after the slave instance is started (it's running as a Windows service). After that, I get a "java.lang.NoClassDefFoundError: Could not initialize class hudson.maven.MavenModuleSetBuild" error.
If I create a freestyle job, and include the maven command as a batch command to run on the slave, it works fine. The Maven2 job appears to locate Maven on the slave machine, but it apparently can't find the maven-plugin (probably due to the classloading error).
I've searched and posted a ticket to the jenkins-ci site, but no luck as of yet. Has anyone run into this problem?
Stacktrace:
Found mavenVersion 2.2.1 from file jar:file:/C:/apache-maven-2.2.1/lib/maven-2.2.1-uber.jar!/META-INF/maven/org.apache.maven/maven-core/pom.properties
Parsing POMs
ERROR: Failed to parse POMs
hudson.util.IOException2: remote file operation failed: c:\jenkins-slave\workspace\AO_SISO_AT-smoketest-CIT1 at hudson.remoting.Channel@7b827b82:10.40.163.105
at hudson.FilePath.act(FilePath.java:752)
at hudson.FilePath.act(FilePath.java:738)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.parsePoms(MavenModuleSetBuild.java:817)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:617)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:429)
at hudson.model.Run.run(Run.java:1374)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:467)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:145)
Caused by: java.io.IOException: Remote call on 10.40.163.105 failed
at hudson.remoting.Channel.call(Channel.java:652)
at hudson.FilePath.act(FilePath.java:745)
... 8 more
Caused by: java.lang.ExceptionInInitializerError
at hudson.maven.MavenModuleSetBuild$PomParser.invoke(MavenModuleSetBuild.java:1236)
at hudson.maven.MavenModuleSetBuild$PomParser.invoke(MavenModuleSetBuild.java:1110)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:1956)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:270)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1$1.run(Engine.java:60)
at java.lang.Thread.run(Unknown Source)
Caused by: com.thoughtworks.xstream.XStream$InitializationException: Could not instantiate converter : com.thoughtworks.xstream.converters.extended.DurationConverter : null
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:735)
at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:699)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:445)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:385)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:323)
at hudson.util.XStream2.<init>(XStream2.java:62)
at hudson.model.Run.<clinit>(Run.java:1867)
... 13 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:728)
... 19 more
Caused by: javax.xml.datatype.DatatypeConfigurationException: Provider org.apache.xerces.jaxp.datatype.DatatypeFactoryImpl not found
at javax.xml.datatype.DatatypeFactory.newInstance(Unknown Source)
at com.thoughtworks.xstream.converters.extended.DurationConverter.<init>(DurationConverter.java:33)
... 24 more
Caused by: java.lang.ClassNotFoundException: Classloading from system classloader disabled
at java.lang.Throwable.<init>(Throwable.java:56)
at java.lang.Throwable.<init>(Throwable.java:80)
at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:80)
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch2(RemoteClassLoader.java:399)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:274)
at hudson.remoting.Request$2.run(Request.java:270)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:432)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:284)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:799)
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我有类似的问题。研究了互联网但没有得到任何解决方案。最后调试了jenkins/hudson并解决了这个问题。
此错误的根本原因是 jenkin 的最新版本在 jenkins.war 文件中附带了 xml 解析器。看起来如果你的服务器已经有这个 jar 文件，它不会让 jenkin 应用程序重新加载它自己的 xml 解析器版本。因此，为了解决此问题，我从 jenkins.war 文件的 WEB-INF/lib 目录中删除了文件 xercesImpl-2.9.1.jar 。之后替换现有的 war 文件并重新启动服务器。而且它的工作没有任何问题。
I had similar issue. Researched internet but did not get any solution. Finally debugged the jenkins/hudson and resolved this issue.
The root cause of this error is that recent versions of jenkin is shipped with xml parser within jenkins.war file. Looks like if your server already has this jar file, it won't let jenkin application to reload its own version of xml parsers. So to resolve this issue I have removed file xercesImpl-2.9.1.jar from WEB-INF/lib directory of jenkins.war file. After that replaced existing war file and restarted server. And it worked as without any problem.