DerekHQ opened a new issue #3161: SpringCloudGateway More than 300 spans required to create URL: https://github.com/apache/skywalking/issues/3161 Please answer these questions before submitting your issue. - Why do you submit this issue? - [ ] Question or discussion - [x] Bug - [ ] Requirement - [ ] Feature or performance improvement ___ ### Bug - Which version of SkyWalking, OS and JRE? SkyWalking version: 6.2.0 OS: Redhat4 jdk: jdk1.8 spring-boot 2.1.4-RELEASE spring-cloud-dependencies: Greenwich.SR2 spring-cloud-starter-gateway: 2.1.2.RELEASE spring-webflux: 5.1.6.RELEASE - Which company or project? - What happen? It is a sample project, only two levels, just gateway-> service for echo demo. At first, it's work fine! But, when I using Apachebench(ab) to stress testing, then agent throw exception: -----------------agent log----------------- _WARN 2019-07-24 17:40:14:099 reactor-http-epoll-10 TracingContext : More than 300 spans required to create java.lang.RuntimeException: Shadow tracing context. Thread dump at org.apache.skywalking.apm.agent.core.context.TracingContext.isLimitMechanismWorking(TracingContext.java:543) at org.apache.skywalking.apm.agent.core.context.TracingContext.access$100(TracingContext.java:46) at org.apache.skywalking.apm.agent.core.context.TracingContext$5.doProcess(TracingContext.java:322) at org.apache.skywalking.apm.agent.core.dictionary.PossibleFound.doInCondition(PossibleFound.java:50) at org.apache.skywalking.apm.agent.core.context.TracingContext.createExitSpan(TracingContext.java:318) at org.apache.skywalking.apm.agent.core.context.ContextManager.createExitSpan(ContextManager.java:122) at org.apache.skywalking.apm.plugin.spring.cloud.gateway.v2.HttpClientOperationsSendInterceptor.beforeMethod(HttpClientOperationsSendInterceptor.java:56) at org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstMethodsInter.intercept(InstMethodsInter.java:82) at reactor.netty.http.client.HttpClientOperations.send(HttpClientOperations.java) at org.springframework.cloud.gateway.filter.NettyRoutingFilter.lambda$filter$2(NettyRoutingFilter.java:140) at reactor.netty.http.client.HttpClientConnect$HttpClientHandler.requestWithBody(HttpClientConnect.java:569) at reactor.netty.http.client.HttpClientConnect$HttpObserver.lambda$onStateChange$0(HttpClientConnect.java:424) at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44) at reactor.netty.http.client.HttpClientConnect$HttpObserver.onStateChange(HttpClientConnect.java:425) at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.onStateChange(PooledConnectionProvider.java:511) at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.run(PooledConnectionProvider.java:540) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:333) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) at java.lang.Thread.run(Thread.java:748)_
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