URLClassLoader previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"

[trask]

I don't have a local repro that can be used to debug, so was curious if anyone has thoughts / leads on what might be the issue here? Thanks!

Exception:

Error creating bean with name 'otelAutoDispatcherFilter': Instantiation of bean failed; nested exception is java.lang.LinkageError: loader constraint violation: loader (instance of java/net/URLClassLoader) previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"

full stack trace

02-Jan-2025 14:34:13.659 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class [org.springframework.web.context.ContextLoaderListener]
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'otelAutoDispatcherFilter': Instantiation of bean failed; nested exception is java.lang.LinkageError: loader constraint violation: loader (instance of java/net/URLClassLoader) previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1334)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1232)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:920)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
        at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:399)
        at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:278)
        at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4007)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4448)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:599)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:571)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:603)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1175)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1888)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
        at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1086)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:470)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1584)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:312)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:109)
        at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:385)
        at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:332)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:776)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:721)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1203)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1193)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
        at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:749)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:211)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
        at org.apache.catalina.core.StandardService.startInternal(StandardService.java:415)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:878)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:735)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473)
    Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of java/net/URLClassLoader) previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter.parseAndCacheMh(OpenTelemetryHandlerMappingFilter.java:190)
        at org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter.<clinit>(OpenTelemetryHandlerMappingFilter.java:45)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:211)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1326)
        ... 54 more

Same exception (with slightly different stack trace) occurs as well when running under -Dotel.javaagent.experimental.indy=true:

(cc @JonasKunz @SylvainJuge)

full stack trace

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'otelAutoDispatcherFilter': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter]: Constructor threw exception; nested exception is java.lang.LinkageError: loader constraint violation: loader (instance of java/net/URLClassLoader) previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1232)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:920)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:399)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:278)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4018)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4460)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:599)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:571)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:603)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1175)
    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1888)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
    at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1086)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:470)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1584)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:312)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:109)
    at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:389)
    at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:336)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:776)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:721)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1203)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1193)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:749)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:211)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:415)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:874)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:739)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter]: Constructor threw exception; nested exception is java.lang.LinkageError: loader constraint violation: loader (instance of java/net/URLClassLoader) previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:224)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1326)
    ... 54 more
Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of java/net/URLClassLoader) previously initiated loading for a different type with name "org/springframework/http/server/RequestPath"
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at io.opentelemetry.javaagent.tooling.instrumentation.indy.InstrumentationModuleClassLoader.tryLoad(InstrumentationModuleClassLoader.java:263)
    at io.opentelemetry.javaagent.tooling.instrumentation.indy.InstrumentationModuleClassLoader.loadClass(InstrumentationModuleClassLoader.java:235)
    at io.opentelemetry.javaagent.tooling.instrumentation.indy.InstrumentationModuleClassLoader.loadClass(InstrumentationModuleClassLoader.java:205)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter.parseAndCacheMh(OpenTelemetryHandlerMappingFilter.java:190)
    at org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter.<clinit>(OpenTelemetryHandlerMappingFilter.java:45)
    at sun.misc.Unsafe.allocateInstance(Native Method)
    at java.lang.invoke.DirectMethodHandle.allocateInstance(DirectMethodHandle.java:439)
    at org.springframework.web.servlet.v3_1.OpenTelemetryHandlerMappingFilter.<init>(Unknown Source)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:211)
    ... 56 more

[JonasKunz]

No idea where this could come from, but I'm leaning towards that this is a classpath problem of the target application which is just surfaced through the agent. Somehow, there are two copies of org/springframework/http/server/RequestPath around.

• Maybe try the -verbose:class JVM option and see if it gives a hint where those two copies come from?
• Was it tried with an older version of the agent? Would be great to see in which version this occured the first time, so we could look at that specific diff