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java在无状态KnowledgeSession中经常出现异常

1 周，3 日 Questions & Answers

我们在Jboss EAP 6.2中使用Drools规则引擎。在负载下运行时（可能只插入4-5组新事实），我们经常会看到以下stacktrace：如果重新插入相同的数据，则通常不会发生错误

堆栈跟踪：

java.lang.NullPointerException
        at org.drools.core.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:344)
[drools-core-6.1.0.Final.jar:6.1.0.Final]
        at org.kie.camel.component.KieExecuteProducer.process(KieExecuteProducer.java:96)
[kie-camel-6.1.0.Final.jar:6.1.0.Final]
        at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:110)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:105)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:60)
[camel-core-2.12.2.jar:2.12.2]
        at org.kie.camel.component.KiePolicy$KieProcess.process(KiePolicy.java:330)
[kie-camel-6.1.0.Final.jar:6.1.0.Final]
        at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:105)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:87)
[camel-core-2.12.2.jar:2.12.2]
        at org.apache.camel.component.cxf.jaxrs.CxfRsInvoker.syncInvoke(CxfRsInvoker.java:130)
[camel-cxf-2.12.2.jar:2.12.2]
        at org.apache.camel.component.cxf.jaxrs.CxfRsInvoker.performInvocation(CxfRsInvoker.java:60)
[camel-cxf-2.12.2.jar:2.12.2]
        at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:104)
[cxf-api-2.7.11.jar:2.7.11]
        at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:204)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:101)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)
[cxf-api-2.7.11.jar:2.7.11]
        at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:94)
[cxf-api-2.7.11.jar:2.7.11]
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
[cxf-api-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
[cxf-api-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:241)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:171)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:206)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
[jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
        at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262)
[cxf-bundle-jaxrs-2.7.11.jar:2.7.11]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)
[jboss-as-web-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920)
[jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_67]

非常感谢您的帮助


共 (0) 个答案