Error java.lang.LinkageError: loader constraint violation: loader

[Laurent Schweizer]

Dear all,

 

I have sometimes this error, any idea ?

 

BR

Laurent

 

java.lang.LinkageError: loader constraint violation: loader (instance of org/mobicents/slee/container/component/deployment/classloading/URLClassLoaderDomainImpl) previously initiated loading for a different type with name "jain/protocol/ip/mgcp/message/parms/CallIdentifier"

        at java.lang.ClassLoader.defineClass1(Native Method)

        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

        at org.mobicents.slee.container.component.deployment.classloading.URLClassLoaderDomainImpl.findClassLocallyLocked(URLClassLoaderDomainImpl.java:215)

        at org.mobicents.slee.container.component.deployment.classloading.URLClassLoaderDomainImpl.findClass(URLClassLoaderDomainImpl.java:184)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

        at org.mobicents.slee.container.component.deployment.classloading.URLClassLoaderDomainImpl.loadClass(URLClassLoaderDomainImpl.java:154)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

        at org.mobicents.protocols.mgcp.stack.JainMgcpStackProviderImpl.getUniqueCallIdentifier(JainMgcpStackProviderImpl.java:352)

        at org.mobicents.slee.resource.mgcp.ra.JainMgcpProviderImpl.getUniqueCallIdentifier(JainMgcpProviderImpl.java:210)

        at ch.peoplefone.pbx.call.CallSbb.createConfEndpointForMoh(CallSbb.java:592)

        at ch.peoplefone.pbx.call.CallSbb.placeOnHold(CallSbb.java:650)

        at ch.peoplefone.pbx.call.CallSbb.onCUpdateEvent(CallSbb.java:499)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:597)

        at org.mobicents.slee.runtime.sbbentity.SbbEntityImpl.invokeEventHandler(SbbEntityImpl.java:481)

        at org.mobicents.slee.runtime.eventrouter.routingtask.EventRoutingTaskImpl.routeQueuedEvent(EventRoutingTaskImpl.java:379)

        at org.mobicents.slee.runtime.eventrouter.routingtask.EventRoutingTaskImpl.run(EventRoutingTaskImpl.java:126)

        at org.mobicents.slee.runtime.eventrouter.EventRouterExecutorImpl$EventRoutingTaskStatsCollector.run(EventRouterExecutorImpl.java:73)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

        at java.lang.Thread.run(Thread.java:662)

10:2

 

[Vilius Panevėžys]

You might have multiple versions of the same library in classpath.


--
Vilius Panevėžys
Elitnet

[David Salvador]

I had the same problem.

Like Vilius said, you should have multiple versions of the same library in the classpath. also make sure you dont have any class with that name in your project ( that was my error, i overwride the project, but forgot to delete some old classes that had the same name).

David

[Laurent Schweizer]

Thanks for the info.

 

Before I never get such issue but since I move part of my code in a lib folder I get such error.

 

Did you think that  the following error is also due to the same issue?

 

09:48:09,624 ERROR [CallSbb] Failed to set sbb context

java.lang.ClassCastException: net.java.slee.resource.mgcp.MgcpActivityContextInterfaceFactoryImpl cannot be cast to net.java.slee.resource.mgcp.MgcpActivityContextInterfaceFactory

        at ch.peoplefone.pbx.call.CallSbb.setSbbContext(CallSbb.java:2167)

        at org.mobicents.slee.runtime.sbb.SbbObjectImpl.<init>(SbbObjectImpl.java:124)

        at org.mobicents.slee.runtime.sbb.SbbObjectPoolFactory.makeObject(SbbObjectPoolFactory.java:146)

        at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:974)

        at org.mobicents.slee.runtime.sbb.SbbObjectPoolImpl.borrowObject(SbbObjectPoolImpl.java:68)

        at org.mobicents.slee.runtime.sbbentity.SbbEntityImpl.assignSbbObject(SbbEntityImpl.java:740)

        at org.mobicents.slee.runtime.eventrouter.routingtask.EventRoutingTaskImpl.routeQueuedEvent(EventRoutingTaskImpl.java:360)

        at org.mobicents.slee.runtime.eventrouter.routingtask.EventRoutingTaskImpl.run(EventRoutingTaskImpl.java:126)

        at org.mobicents.slee.runtime.eventrouter.EventRouterExecutorImpl$EventRoutingTaskStatsCollector.run(EventRouterExecutorImpl.java:73)

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

        at java.lang.Thread.run(Thread.java:662)

 

BR

 

Laurent

 

De : mobicent...@googlegroups.com [mailto:mobicent...@googlegroups.com] De la part de David Salvador
Envoyé : mardi 17 juin 2014 13:42
À : mobicent...@googlegroups.com
Cc : vil...@elitnet.lt
Objet : Re: [mobicents-public] Error java.lang.LinkageError: loader constraint violation: loader

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[Oliver Jowett]

On 18 June 2014 08:56, Laurent Schweizer <laurent....@peoplefone.com> wrote:

 

Did you think that  the following error is also due to the same issue?

 

09:48:09,624 ERROR [CallSbb] Failed to set sbb context

java.lang.ClassCastException: net.java.slee.resource.mgcp.MgcpActivityContextInterfaceFactoryImpl cannot be cast to net.java.slee.resource.mgcp.MgcpActivityContextInterfaceFactory

Yes this looks like the classic manifestation of having two copies of the class loaded (either from different locations, or twice from the same location by different classloaders).

The Factory interface visible in the FactoryImpl classloader is not the same (different classloader) as the Factory interface visible to your SBB code.

Oliver

[David Salvador]

I had the linkage Error exactly when i moved some of my code to a lib. If you haven't resolved that, if you're developing in one machine, and deploying on another (or VM), i would advice too:

• to delete the entire folder of the project in the deployment machine
• remove all the project jars from the repository,
• copy the entire project once again  and deploy

About the Cast error, i agree that is the same error.

P.S:  if you're using maven, don't forget that when you add the dependency to your lib, you should use <scope>provided</scope>