在wso2 API管理器中发布API时间歇性失败

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我们在集群环境中安装了WSO2 API Manager 2.1.0。 API发布间歇性失败。从Publisher到Gateway管理器的API发布请求由AWS弹性负载均衡器提供。分析发布者的日志文件时，会显示以下错误。

INFO {org.apache.axis2.transport.http.HTTPSender} -  Unable to sendViaPost to url[https://LB-DNS:PORT/services/APIGatewayAdmin] {org.apache.axis2.transport.http.HTTPSender}
org.apache.axis2.AxisFault: Transport error: 504 Error: GATEWAY_TIMEOUT
    at org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:326)
    at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:196)
    at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:77)
    at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:451)
    at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:278)
    at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
    at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:430)
    at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:225)
    at org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
    at org.wso2.carbon.apimgt.gateway.stub.APIGatewayAdminStub.getApi(APIGatewayAdminStub.java:7012)
    at org.wso2.carbon.apimgt.impl.utils.APIGatewayAdminClient.getApi(APIGatewayAdminClient.java:145)
    at org.wso2.carbon.apimgt.impl.APIGatewayManager.publishToGateway(APIGatewayManager.java:102)
    at org.wso2.carbon.apimgt.impl.APIProviderImpl.publishToGateway(APIProviderImpl.java:1519)
    at org.wso2.carbon.apimgt.impl.APIProviderImpl.propergateAPIStatusChangeToGateways(APIProviderImpl.java:1328)
    at org.wso2.carbon.apimgt.impl.UserAwareAPIProvider.propergateAPIStatusChangeToGateways(UserAwareAPIProvider.java:36)
    at org.wso2.carbon.apimgt.impl.executors.APIExecutor.execute(APIExecutor.java:136)
    at org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle.runCustomExecutorsCode(DefaultLifeCycle.java:712)
    at org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle.invoke(DefaultLifeCycle.java:450)
    at org.wso2.carbon.governance.registry.eventing.handlers.GovernanceEventingHandler.invokeAspect(GovernanceEventingHandler.java:338)
    at org.wso2.carbon.registry.core.jdbc.handlers.HandlerManager.invokeAspect(HandlerManager.java:2792)
    at org.wso2.carbon.registry.core.jdbc.handlers.HandlerLifecycleManager.invokeAspect(HandlerLifecycleManager.java:518)
    at org.wso2.carbon.registry.core.jdbc.EmbeddedRegistry.invokeAspect(EmbeddedRegistry.java:2591)
    at org.wso2.carbon.registry.core.caching.CacheBackedRegistry.invokeAspect(CacheBackedRegistry.java:510)
    at org.wso2.carbon.registry.core.session.UserRegistry.invokeAspect(UserRegistry.java:1952)
    at org.wso2.carbon.governance.api.common.dataobjects.GovernanceArtifactImpl.invokeAction(GovernanceArtifactImpl.java:829)
    at org.wso2.carbon.governance.api.common.dataobjects.GovernanceArtifactImpl.invokeAction(GovernanceArtifactImpl.java:808)
    at org.wso2.carbon.apimgt.impl.APIProviderImpl.changeLifeCycleStatus(APIProviderImpl.java:3755)
    at org.wso2.carbon.apimgt.impl.UserAwareAPIProvider.changeLifeCycleStatus(UserAwareAPIProvider.java:148)
    at org.wso2.carbon.apimgt.rest.api.publisher.impl.ApisApiServiceImpl.apisChangeLifecyclePost(ApisApiServiceImpl.java:303)
    at org.wso2.carbon.apimgt.rest.api.publisher.ApisApi.apisChangeLifecyclePost(ApisApi.java:520)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180)
    at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:189)
    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:99)
    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:254)
    at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
    at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:299)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:218)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:274)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatSessionReplicationValve.invoke(CarbonTomcatSessionReplicationValve.java:45)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
    at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)
    at org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
    at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
    at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
    at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:333)
    at org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:218)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
ERROR {org.wso2.carbon.apimgt.impl.APIGatewayManager} -  Error occurred when publish to gateway Production and Sandbox {org.wso2.carbon.apimgt.impl.APIGatewayManager}
org.apache.axis2.AxisFault: Error while obtaining API information from gateway. Transport error: 504 Error: GATEWAY_TIMEOUT
    at org.wso2.carbon.apimgt.impl.utils.APIGatewayAdminClient.getApi(APIGatewayAdminClient.java:149)
    at org.wso2.carbon.apimgt.impl.APIGatewayManager.publishToGateway(APIGatewayManager.java:102)
    at org.wso2.carbon.apimgt.impl.APIProviderImpl.publishToGateway(APIProviderImpl.java:1519)
    at org.wso2.carbon.apimgt.impl.APIProviderImpl.propergateAPIStatusChangeToGateways(APIProviderImpl.java:1328)
    at org.wso2.carbon.apimgt.impl.UserAwareAPIProvider.propergateAPIStatusChangeToGateways(UserAwareAPIProvider.java:36)
    at org.wso2.carbon.apimgt.impl.executors.APIExecutor.execute(APIExecutor.java:136)
    at org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle.runCustomExecutorsCode(DefaultLifeCycle.java:712)
    at org.wso2.carbon.governance.registry.extensions.aspects.DefaultLifeCycle.invoke(DefaultLifeCycle.java:450)
    at org.wso2.carbon.governance.registry.eventing.handlers.GovernanceEventingHandler.invokeAspect(GovernanceEventingHandler.java:338)
    at org.wso2.carbon.registry.core.jdbc.handlers.HandlerManager.invokeAspect(HandlerManager.java:2792)
    at org.wso2.carbon.registry.core.jdbc.handlers.HandlerLifecycleManager.invokeAspect(HandlerLifecycleManager.java:518)
    at org.wso2.carbon.registry.core.jdbc.EmbeddedRegistry.invokeAspect(EmbeddedRegistry.java:2591)
    at org.wso2.carbon.registry.core.caching.CacheBackedRegistry.invokeAspect(CacheBackedRegistry.java:510)
    at org.wso2.carbon.registry.core.session.UserRegistry.invokeAspect(UserRegistry.java:1952)
    at org.wso2.carbon.governance.api.common.dataobjects.GovernanceArtifactImpl.invokeAction(GovernanceArtifactImpl.java:829)
    at org.wso2.carbon.governance.api.common.dataobjects.GovernanceArtifactImpl.invokeAction(GovernanceArtifactImpl.java:808)
    at org.wso2.carbon.apimgt.impl.APIProviderImpl.changeLifeCycleStatus(APIProviderImpl.java:3755)
    at org.wso2.carbon.apimgt.impl.UserAwareAPIProvider.changeLifeCycleStatus(UserAwareAPIProvider.java:148)
    at org.wso2.carbon.apimgt.rest.api.publisher.impl.ApisApiServiceImpl.apisChangeLifecyclePost(ApisApiServiceImpl.java:303)
    at org.wso2.carbon.apimgt.rest.api.publisher.ApisApi.apisChangeLifecyclePost(ApisApi.java:520)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180)
    at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:189)
    at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:99)
    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:254)
    at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
    at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:299)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:218)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:274)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatSessionReplicationValve.invoke(CarbonTomcatSessionReplicationValve.java:45)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
    at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)
    at org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
    at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
    at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
    at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:333)
    at org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:218)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.axis2.AxisFault: Transport error: 504 Error: GATEWAY_TIMEOUT
    at org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:326)
    at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:196)
    at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:77)
    at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:451)
    at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:278)
    at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
    at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:430)
    at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:225)
    at org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
    at org.wso2.carbon.apimgt.gateway.stub.APIGatewayAdminStub.getApi(APIGatewayAdminStub.java:7012)
    at org.wso2.carbon.apimgt.impl.utils.APIGatewayAdminClient.getApi(APIGatewayAdminClient.java:145)
    ... 71 more

在网关管理器中找到以下错误消息

ERROR {org.apache.synapse.transport.passthru.PassThroughHttpSSLSender} -  IO Error sending response message {org.apache.synapse.transport.passthru.PassThroughHttpSSLSender}
org.apache.axis2.AxisFault: java.io.IOException: Broken pipe
    at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
    at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:78)
    at org.apache.synapse.transport.passthru.PassThroughHttpSender.sendUsingOutputStream(PassThroughHttpSender.java:307)
    at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:271)
    at org.apache.axis2.engine.AxisEngine.sendFault(AxisEngine.java:525)
    at org.apache.axis2.transport.http.AxisServlet.handleFault(AxisServlet.java:433)
    at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:216)
    at org.wso2.carbon.core.transports.CarbonServlet.doPost(CarbonServlet.java:231)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
    at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    at org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.owasp.csrfguard.CsrfGuardFilter.doFilter(CsrfGuardFilter.java:88)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:120)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
    at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)
    at org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
    at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
    at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
    at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: com.ctc.wstx.exc.WstxIOException: java.io.IOException: Broken pipe
    at com.ctc.wstx.sw.BaseStreamWriter._finishDocument(BaseStreamWriter.java:1406)
    at com.ctc.wstx.sw.BaseStreamWriter.close(BaseStreamWriter.java:247)
    at org.apache.axiom.om.impl.MTOMXMLStreamWriter.close(MTOMXMLStreamWriter.java:188)
    at org.apache.axiom.om.impl.llom.OMSerializableImpl.serializeAndConsume(OMSerializableImpl.java:197)
    at org.apache.axis2.transport.http.SOAPMessageFormatter.writeTo(SOAPMessageFormatter.java:74)
    ... 50 more
Caused by: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe
    at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:370)
    at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:334)
    at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:101)
    at com.compuware.apm.agent.introspection.uem.impl.AgentInjectingServletOutputStream.flush(AgentInjectingServletOutputStream.java:168)
    at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:103)
    at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:225)
    at com.ctc.wstx.sw.BufferingXmlWriter.close(BufferingXmlWriter.java:198)
    at com.ctc.wstx.sw.BaseStreamWriter._finishDocument(BaseStreamWriter.java:1404)
    ... 54 more
Caused by: java.io.IOException: Broken pipe
    at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
    at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
    at sun.nio.ch.IOUtil.write(IOUtil.java:51)
    at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
    at org.apache.tomcat.util.net.SecureNioChannel.flush(SecureNioChannel.java:141)
    at org.apache.tomcat.util.net.SecureNioChannel.write(SecureNioChannel.java:502)
    at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
    at org.apache.tomcat.util.net.NioselectorPool.write(NioSelectorPool.java:174)
    at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:164)
    at org.apache.coyote.http11.InternalNioOutputBuffer.flushBuffer(InternalNioOutputBuffer.java:243)
    at org.apache.coyote.http11.InternalNioOutputBuffer.flush(InternalNioOutputBuffer.java:95)
    at org.apache.coyote.http11.AbstractHttp11Processor.action(AbstractHttp11Processor.java:800)
    at org.apache.coyote.Response.action(Response.java:172)
    at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:366)
    at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:334)
    at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:101)
    at com.compuware.apm.agent.introspection.uem.impl.AgentInjectingServletOutputStream.flush(AgentInjectingServletOutputStream.java:168)
    at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:141)
    at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:182)
    ... 45 more
答案

我们能够通过分析可能的情况请求挂起来解决此问题。我们使用AWS EFS在网关管理器和网关工作者之间共享突触文件（APIM_HOME / repository / deployment / server / synapse-configs / default）。在发布API时，Publisher将调用APIGateway管理服务，其中包括EFS文件创建操作。我们用Burst模式创建了EFS。在突发模式中，使用突发信用确定吞吐量。由于我们的EFS突发信用减少到零，EFS没有足够的吞吐量来在EFS中进行I / O操作。将吞吐量模式更改为预配置模式解决了该问题。

有用的链接https://docs.aws.amazon.com/efs/latest/ug/performance.html#throughput-modes https://aws.amazon.com/premiumsupport/knowledge-center/efs-burst-credits/

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