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https://issues.apache.org/jira/browse/DELTASPIKE-1360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mark Struberg resolved DELTASPIKE-1360.
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Resolution: Not A Problem
In any case it is not a DeltaSpike issue I'd say!
It seems more like the resources configured in TomEE are exhaused. If you have
400 TPS then you might likely just be limited by e.g. the connection pool or
some other resource constraint. DeltaSpike does nothing else than requesting an
EntityManager from the container.
If the problem persists even in new TomEE versions, then please open a Ticket
in Apache TomEE
> NPE at resolveEntityManagerBeans during heavy load
> --------------------------------------------------
>
> Key: DELTASPIKE-1360
> URL: https://issues.apache.org/jira/browse/DELTASPIKE-1360
> Project: DeltaSpike
> Issue Type: Bug
> Affects Versions: 1.8.1
> Reporter: Abhishek Rao
> Assignee: Romain Manni-Bucau
> Priority: Major
>
> We're running a web-app which is experiencing inconsistent 500 Internal
> Server Errors from TomEE during medium-high concurrency. The stack trace
> follows:
> {code:java}
> EjbTransactionUtil.handleSystemException
> EjbTransactionUtil.handleSystemException: null
> java.lang.NullPointerException
> at
> org.apache.deltaspike.jpa.spi.entitymanager.QualifierBackedEntityManagerResolver.resolveEntityManagerBeans(QualifierBackedEntityManagerResolver.java:64)
> at
> org.apache.deltaspike.jpa.spi.entitymanager.QualifierBackedEntityManagerResolver.resolveEntityManager(QualifierBackedEntityManagerResolver.java:46)
> at
> org.apache.deltaspike.jpa.impl.transaction.ResourceLocalTransactionStrategy.resolveEntityManagerForQualifier(ResourceLocalTransactionStrategy.java:381)
> at
> org.apache.deltaspike.jpa.impl.transaction.ResourceLocalTransactionStrategy.execute(ResourceLocalTransactionStrategy.java:113)
> at
> org.apache.deltaspike.jpa.impl.transaction.TransactionalInterceptor.executeInTransaction(TransactionalInterceptor.java:57)
> at sun.reflect.GeneratedMethodAccessor87.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.webbeans.component.InterceptorBean.intercept(InterceptorBean.java:136)
> at
> org.apache.webbeans.intercept.InterceptorInvocationContext.proceed(InterceptorInvocationContext.java:63)
> at
> org.apache.webbeans.intercept.DefaultInterceptorHandler.invoke(DefaultInterceptorHandler.java:139)
> at **REMOVED_CONFIDENTIAL**
> at **REMOVED_CONFIDENTIAL**
> at **REMOVED_CONFIDENTIAL**
> at sun.reflect.GeneratedMethodAccessor98.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:205)
> at
> org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:186)
> at
> org.apache.openejb.monitoring.StatsInterceptor.record(StatsInterceptor.java:181)
> at
> org.apache.openejb.monitoring.StatsInterceptor.invoke(StatsInterceptor.java:100)
> at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:205)
> at
> org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:186)
> at
> org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:85)
> at
> org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:252)
> at
> org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:212)
> at org.apache.openejb.util.proxy.ProxyEJB$Handler.invoke(ProxyEJB.java:74)
> at **REMOVED_CONFIDENTIAL**
> at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.openejb.server.cxf.rs.OpenEJBEJBInvoker.performInvocation(OpenEJBEJBInvoker.java:95)
> at
> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
> at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:191)
> at
> org.apache.openejb.server.cxf.rs.OpenEJBEJBInvoker.invoke(OpenEJBEJBInvoker.java:68)
> at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:101)
> at
> org.apache.openejb.server.cxf.rs.AutoJAXRSInvoker.invoke(AutoJAXRSInvoker.java:64)
> at
> org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
> at
> org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
> at
> org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
> at
> org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)
> at
> org.apache.openejb.server.cxf.rs.CxfRsHttpListener.doInvoke(CxfRsHttpListener.java:253)
> at
> org.apache.tomee.webservices.CXFJAXRSFilter.doFilter(CXFJAXRSFilter.java:94)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
> at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
> at org.apache.openejb.server.httpd.EEFilter.doFilter(EEFilter.java:65)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
> at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
> at
> org.apache.tomee.catalina.OpenEJBSecurityListener$RequestCapturer.invoke(OpenEJBSecurityListener.java:97)
> at
> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
> at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
> at
> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
> at
> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457)
> at
> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> The error has been eating into our heads and occurs at undetermined intervals
> in a single app instance that's doing 400 transactions per second. Is this
> perhaps a thread safety issue?
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