search

codecentric / spring-boot-admin

Admin UI for administration of spring boot applications
Apache License 2.0
12.38k stars 3.08k forks source link

Connection reset by peer #939

Closed marbon87 closed 6 years ago

marbon87 commented 6 years ago

Hi,

i have two instances of SBA (version 2.0.2, spring boot 2.0.3.RELEASE) sync with hazelcast (version 3.9.4) and the log files are full of the following error log message:

2018-09-18 12:44:30 [ajp-nio-9100-exec-20] ERROR o.a.c.c.C.[.[.[.[dispatcherServlet] - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception
java.io.IOException: Connection reset by peer
    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:65)
    at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
    at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:134)
    at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
    at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:157)
    at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1276)
    at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:670)
    at org.apache.tomcat.util.net.SocketWrapperBase.flushBlocking(SocketWrapperBase.java:607)
    at org.apache.tomcat.util.net.SocketWrapperBase.flush(SocketWrapperBase.java:597)
    at org.apache.coyote.ajp.AjpProcessor.writeData(AjpProcessor.java:1321)
    at org.apache.coyote.ajp.AjpProcessor.access$900(AjpProcessor.java:54)
    at org.apache.coyote.ajp.AjpProcessor$SocketOutputBuffer.doWrite(AjpProcessor.java:1438)
    at org.apache.coyote.Response.doWrite(Response.java:541)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:351)
    at org.apache.catalina.connector.OutputBuffer.flushByteBuffer(OutputBuffer.java:825)
    at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:310)
    at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:284)
    at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputStream.java:118)
    at org.springframework.security.web.util.OnCommittedResponseWrapper$SaveContextServletOutputStream.flush(OnCommittedResponseWrapper.java:514)
    at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297)
    at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
    at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
    at org.springframework.util.StreamUtils.copy(StreamUtils.java:121)
    at org.springframework.http.converter.StringHttpMessageConverter.writeInternal(StringHttpMessageConverter.java:103)
    at org.springframework.http.converter.StringHttpMessageConverter.writeInternal(StringHttpMessageConverter.java:43)
    at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:224)
    at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitterReturnValueHandler$HttpMessageConvertingHandler.sendInternal(ResponseBodyEmitterReturnValueHandler.java:199)
    at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitterReturnValueHandler$HttpMessageConvertingHandler.send(ResponseBodyEmitterReturnValueHandler.java:189)
    at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitter.sendInternal(ResponseBodyEmitter.java:189)
    at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitter.send(ResponseBodyEmitter.java:183)
    at org.springframework.web.servlet.mvc.method.annotation.SseEmitter.send(SseEmitter.java:133)
    at org.springframework.web.servlet.mvc.method.annotation.ReactiveTypeHandler$SseEmitterSubscriber.send(ReactiveTypeHandler.java:341)
    at org.springframework.web.servlet.mvc.method.annotation.ReactiveTypeHandler$AbstractEmitterSubscriber.run(ReactiveTypeHandler.java:283)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

The request, that trigger the error from time to time, are GET-request to applications. Some lead to the error but not fall

joshiste commented 6 years ago

The ui request results in a text/event-stream response returning server sent events. The connection will be kept open and not explicitly terminated and may result in this exception. It just tells you that the browser did close the connection and the server just wants to write some more data to the socket. This is quite normal.

marbon87 commented 6 years ago

But if it is quite normal, shouldn't it log as debug or info? But ok, is a different project that's logging this.

NayMak commented 4 years ago

I agree with @marbon87 . It seems quite normal indeed, but it still returns an error (500). How could we catch this error? (if possible)