[jira] [Resolved] (DELTASPIKE-1360) NPE at resolveEntityManagerBeans during heavy load

["Mark Struberg (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DELTASPIKE-1360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Struberg resolved DELTASPIKE-1360.
---------------------------------------
    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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