summary api 호출시 EOFException 발생

[yuna-seo]

안녕하세요 현재 시스템에서 모니터링 툴로 scouter를 사용중입니다

다름이 아니고 summary api 호출시에 EOFException이 떨어지는 경우가 종종 발생하여서 질문드립니다

특정 경우에만 발생하는 것을 보니, 예외적인 케이스가 있는것 같은데 혹시 summary api의 end of file 처리는 어떤식으로 동작하는것인지 궁금합니다

그리고 혹시 동일한 케이스가 발생헀을 때, 서비스는 정상적으로 이용할 수 있도록 처리할 수 있는 다른 방법이 있을까요?

#e9l10 22:00:14.694 [qtp1755425911-216] ERROR s.w.f.e.m.GenericExceptionMapper[95] - [ErrorStateException] 500 - internal server error - java.io.EOFException, [uri]v1/summary/error/ofType/tomcat_30prd at scouterx.webapp.framework.exception.ErrorState.newException(ErrorState.java:67) scouterx.webapp.framework.exception.ErrorStateException: java.io.EOFException at scouterx.webapp.framework.exception.ErrorState.newException(ErrorState.java:67) at scouterx.webapp.model.summary.Summary.of(Summary.java:58) at scouterx.webapp.layer.consumer.SummaryConsumer.retrieveErrorSummary(SummaryConsumer.java:148) at scouterx.webapp.layer.service.SummaryService.retrieveErrorSummary(SummaryService.java:59) at scouterx.webapp.layer.controller.SummaryController.retrieveErrorSummary(SummaryController.java:275) at scouterx.webapp.layer.controller.SummaryController.retrieveErrorSummaryByType(SummaryController.java:254) 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.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:76) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:148) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:191) at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:243) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:103) at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104) at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268) at org.glassfish.jersey.internal.Errors.process(Errors.java:316) at org.glassfish.jersey.internal.Errors.process(Errors.java:298) at org.glassfish.jersey.internal.Errors.process(Errors.java:268) at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289) at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256) at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703) at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416) at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1650) at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:206) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) at scouterx.webapp.framework.filter.ReleaseResourceFilter.doFilter(ReleaseResourceFilter.java:44) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) at scouterx.webapp.framework.filter.NoCacheFilter.doFilter(NoCacheFilter.java:40) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) at scouterx.webapp.framework.filter.CorsFilter.doFilter(CorsFilter.java:65) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) at scouterx.webapp.framework.filter.LoggingInitServletFilter.doFilter(LoggingInitServletFilter.java:50) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:521) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:564) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:317) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:673) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:591) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.RuntimeException: java.io.EOFException at scouterx.webapp.framework.client.net.TcpProxy.process(TcpProxy.java:206) at scouterx.webapp.framework.client.net.TcpProxy.process(TcpProxy.java:131) at scouterx.webapp.framework.client.model.TextModel.load(TextModel.java:165) at scouterx.webapp.framework.client.model.TextModel.getText(TextModel.java:119) at scouterx.webapp.framework.client.model.TextModel.getTextIfNullDefault(TextModel.java:99) at scouterx.webapp.model.summary.ErrorSummaryItem.toSummary(ErrorSummaryItem.java:103) at scouterx.webapp.model.summary.Summary.of(Summary.java:56) ... 65 common frames omitted Caused by: java.io.EOFException: null at java.io.DataInputStream.readFully(DataInputStream.java:197) at java.io.DataInputStream.readFully(DataInputStream.java:169) at scouter.io.DataInputX.read(DataInputX.java:78) at scouter.io.DataInputX.readBlob(DataInputX.java:107) at scouter.io.DataInputX.readText(DataInputX.java:143) at scouter.lang.value.TextValue.read(TextValue.java:73) at scouter.io.DataInputX.readValue(DataInputX.java:256) at scouter.lang.pack.MapPack.read(MapPack.java:178) at scouter.io.DataInputX.readPack(DataInputX.java:268) at scouterx.webapp.framework.client.net.TcpProxy.lambda$process$0(TcpProxy.java:132) at scouterx.webapp.framework.client.net.TcpProxy.process(TcpProxy.java:197) ... 71 common frames omitted

[gunlee01]

이 에러는 여러 케이스가 있겠지만 scouter collector와 webapp 간 통신에서 불특정 원인으로 통신이 끊어지는 경우에도 발생할 듯 합니다. (그외 다양한 원인이 있겠지요. 특정 조건의 버그일 수도 있습니다.) 재시도시에도 동일한 계속해서 에러가 발생하는지요? 그렇지 않다면 호출하는 쪽에서 에러 발생시 retry를 해주는 수밖에 없을 듯 합니다.