[jbossseam-issues] [JBoss JIRA] Closed: (JBSEAM-3925) java.lang.LinkageError: duplicate class definition in ProxyFactory
Norman Richards (JIRA)
jira-events at lists.jboss.org
Wed Feb 4 14:35:44 EST 2009
[ https://jira.jboss.org/jira/browse/JBSEAM-3925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Norman Richards closed JBSEAM-3925.
-----------------------------------
Fix Version/s: 2.1.2.CR1
Resolution: Done
Updated with changes from javassist 3.8.0, which is the version imported by Seam. I don't have any way to reproduce the issue, so please report back when you've tried the fix.
Thanks.
> java.lang.LinkageError: duplicate class definition in ProxyFactory
> ------------------------------------------------------------------
>
> Key: JBSEAM-3925
> URL: https://jira.jboss.org/jira/browse/JBSEAM-3925
> Project: Seam
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0.0.GA
> Reporter: Takayoshi Kimura
> Assignee: Norman Richards
> Fix For: 2.1.2.CR1
>
>
> The ProxyFactory#createClass() method is not thread safe and causes LinkageError under heavy load. This is same problem as JASSIST-28:
> https://jira.jboss.org/jira/browse/JASSIST-28
> Seam has a little bit modified version of ProxyFactory taken from Javassist 3.3. This race condition issue has been fixed in Javassist 3.4. In Javassist 3.4 this method has a synchronized block and also weak ref based cache mechanism has been added.
> The ProxyFactory#createClass() is not thread safe and called from the following 3 methods:
> 1. Component#getProxyFactory(), this method is a synchronized method
> 2. ClientSideInterceptor#readResolve()
> 3. JavaBeanInterceptor#readResolve()
> 1 and (2 or 3) can run at the same time.
> Possible options:
> * Re-sync ProxyFacotory source code with 3.4 or later version
> * Add a synchronized modifier/block to the ProxyFacotory#createClass() method
> Exception stack trace:
> Caused by: org.jboss.seam.InstantiationException: Could not instantiate Seam component: test
> at org.jboss.seam.Component.newInstance(Component.java:1986)
> at org.jboss.seam.Component.getInstance(Component.java:1876)
> at org.jboss.seam.Component.getInstance(Component.java:1843)
> at org.jboss.seam.Component.getInstanceInAllNamespaces(Component.java:2192)
> at org.jboss.seam.Component.getValueToInject(Component.java:2144)
> at org.jboss.seam.Component.injectAttributes(Component.java:1601)
> at org.jboss.seam.Component.inject(Component.java:1419)
> at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:45)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
> at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
> at org.jboss.seam.persistence.EntityManagerProxyInterceptor.aroundInvoke(EntityManagerProxyInterceptor.java:26)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
> at org.jboss.seam.persistence.HibernateSessionProxyInterceptor.aroundInvoke(HibernateSessionProxyInterceptor.java:27)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
> at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
> at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:50)
> 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:585)
> at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
> at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
> at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
> at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
> at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
> ... 184 more
> Caused by: java.lang.RuntimeException: by java.lang.LinkageError: duplicate class definition: org/javassist/tmp/java/lang/Object_$$_javassist_95
> at org.jboss.seam.util.ProxyFactory.createClass(ProxyFactory.java:190)
> at org.jboss.seam.Component.createProxyFactory(Component.java:2270)
> at org.jboss.seam.Component.getProxyFactory(Component.java:1378)
> at org.jboss.seam.Component.wrap(Component.java:1369)
> at org.jboss.seam.Component.instantiateSessionBean(Component.java:1291)
> at org.jboss.seam.Component.instantiate(Component.java:1276)
> at org.jboss.seam.Component.newInstance(Component.java:1970)
> ... 212 more
> Caused by: javassist.CannotCompileException: by java.lang.LinkageError: duplicate class definition: org/javassist/tmp/java/lang/Object_$$_javassist_95
> at javassist.util.proxy.FactoryHelper.toClass(FactoryHelper.java:165)
> at org.jboss.seam.util.ProxyFactory.createClass(ProxyFactory.java:186)
> ... 218 more
> Caused by: java.lang.LinkageError: duplicate class definition: org/javassist/tmp/java/lang/Object_$$_javassist_95
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> at sun.reflect.GeneratedMethodAccessor50.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at javassist.util.proxy.FactoryHelper.toClass2(FactoryHelper.java:177)
> at javassist.util.proxy.FactoryHelper.toClass(FactoryHelper.java:159)
> ... 219 more
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