Stephen-sen commented on issue #2172: class[class com.alibaba.dubbo.monitor.support.MonitorFilter] after method[invoke] intercept failure java.lang.NullPointerException URL: https://github.com/apache/incubator-skywalking/issues/2172#issuecomment-455132271 from another log i found this `class[class org.elasticsearch.action.TransportActionNodeProxy] before method[execute] intercept failure java.lang.NullPointerException at org.apache.skywalking.apm.plugin.elasticsearch.v5.TransportActionNodeProxyInterceptor.beforeMethod(TransportActionNodeProxyInterceptor.java:53) at org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstMethodsInter.intercept(InstMethodsInter.java:82) at org.elasticsearch.action.TransportActionNodeProxy.execute(TransportActionNodeProxy.java) at org.elasticsearch.client.transport.support.TransportProxyClient$1.doWithNode(TransportProxyClient.java:58) at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:228) at org.elasticsearch.client.transport.support.TransportProxyClient.execute(TransportProxyClient.java:55) at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:295) at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:359) at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:348) at org.elasticsearch.client.support.AbstractClient.index(AbstractClient.java:366) at com.gome.oes.base.cluster.ClusterClient.save(ClusterClient.java:281) at com.gome.oes.base.cluster.MultiClusterClient.save(MultiClusterClient.java:133) at com.gome.ghs.order.repository.es.dao.AbstractDao.save(AbstractDao.java:45) at com.gome.ghs.order.repository.es.dao.impl.GhsTrackTraceIndexDaoImpl.save(GhsTrackTraceIndexDaoImpl.java:28) at com.gome.ghs.order.repository.es.dao.impl.GhsTrackTraceIndexDaoImpl$$FastClassBySpringCGLIB$$a6a748f3.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:721) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656) at com.gome.ghs.order.repository.es.dao.impl.GhsTrackTraceIndexDaoImpl$$EnhancerBySpringCGLIB$$708d0565.save(<generated>) at com.gome.ghs.order.repository.esservice.impl.GhsTrackTraceIndexServiceImpl.save(GhsTrackTraceIndexServiceImpl.java:73) at com.gome.ghs.order.repository.client.es.impl.GhsTrackTraceIndexClientImpl.save(GhsTrackTraceIndexClientImpl.java:61) at com.alibaba.dubbo.common.bytecode.Wrapper14.invokeMethod(Wrapper14.java) at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:73) at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.GtraceFilter.invoke(GtraceFilter.java:20) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke$original$1brqRIDz(MonitorFilter.java:75) at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke$original$1brqRIDz$accessor$ga7qXcA8(MonitorFilter.java) at com.alibaba.dubbo.monitor.support.MonitorFilter$auxiliary$9QoXMf48.call(Unknown Source) at org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstMethodsInter.intercept(InstMethodsInter.java:93) at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:60) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:132) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:108) at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84) at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)`。 **_com.gome.ghs.order.repository is our projectr, is our code have problem？_**
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