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POSpring transaction that uses JPA throws Exception during AfterCompletion phase
 

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  1. POSpring transaction that uses JPA throws Exception during AfterCompletion phase
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    <p>I have a web application that uses the Spring Framework (3.1) and persistence through JPA (2.0) backened by Hibernate (4.1.1)</p> <p>Hibernate Search is also enabled (4.1 RC). Hibernate's Second Level cache is Infinispan (5.1.3).</p> <p>I also use Infinispan as Lucene (3.5) Directory Provider (for Hibernate Search).</p> <p>Everything runs over XA transactions, with Bitronix (2.1.2) as JTA manager.</p> <p>I have methods annotated with <code>@Transactional</code>. When the method ends, and the transaction commits, the following exception occurs:</p> <pre><code>21:08:54,784 WARN BitronixTransaction:499 - Synchronization.afterCompletion() call failed for org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization@704ecb9a java.util.ConcurrentModificationException at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:390) at java.util.LinkedHashMap$KeyIterator.next(LinkedHashMap.java:401) at org.hibernate.engine.transaction.internal.SynchronizationRegistryImpl.notifySynchronizationsAfterTransactionCompletion(SynchronizationRegistryImpl.java:78) at org.hibernate.engine.transaction.internal.TransactionCoordinatorImpl.sendAfterTransactionCompletionNotifications(TransactionCoordinatorImpl.java:335) at org.hibernate.engine.transaction.internal.TransactionCoordinatorImpl.afterTransaction(TransactionCoordinatorImpl.java:147) at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorImpl.afterCompletion(SynchronizationCallbackCoordinatorImpl.java:126) at org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization.afterCompletion(RegisteredSynchronization.java:61) at bitronix.tm.BitronixTransaction.fireAfterCompletionEvent(BitronixTransaction.java:497) at bitronix.tm.BitronixTransaction.commit(BitronixTransaction.java:244) at bitronix.tm.BitronixTransactionManager.commit(BitronixTransactionManager.java:120) at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:1010) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723) at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) at $Proxy79.newTweet(Unknown Source) at com.lucho.controller.TweetController.newTweet(TweetController.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:146) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1805) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) </code></pre> <p>You'll notice the Hibernate class "SynchronizationRegistryImpl". This one holds a set of <code>javax.transaction.Synchronization</code> objects. What I think is happening is that Hibernate itself is registered as a Synchronization in this set. So,</p> <ol> <li>After commit, two events fire: beforeTransactionCompletion and afterTransactionCompletion.</li> <li>beforeTransactionCompletion goes well.</li> <li>afterTransactionCompletation starts and the method notifySynchronizationsAfterTransactionCompletion is called.</li> <li>This method calls afterCompletion on each of the Synchronization elements of the Set.</li> <li>One of the item in the set (not the last) is an Hibernate item, which calls some clean up.</li> <li>This clean up empties the Set.</li> <li>ConcurrentModificationException is thrown because the set was cleaned while it was being iterated.</li> </ol> <p>Maybe I have configured Hibernate incorrectly. My Spring XML are too big to be put here. Luckily some of you guys have an idea of why this is happening.</p> <p>More data (which may or may not be useful) to establish context:</p> <ul> <li>Other of the items in the Synchronization set belongs to Hibernate Search.</li> <li>The database datasource is PostgreSQL.</li> <li>I'm using XA because there is also an ActiveMQ JMS in the transaction, and at first Infinispan was set as a XA resource too (now it hooks to the JTA Synchronization).</li> <li>Spring Security is enabled.</li> <li>Hibernate connects to JTA by CMTTransactionFactory.</li> <li>I'm not sure if the PersistenceContext is "transactional" or "extended", but from debugging it looks like the latter.</li> </ul>
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