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Broken pipe when loading Task list

katarinahallber
Champ in-the-making
Champ in-the-making

‎10-22-2013 03:54 AM

Hi,
we are running Alfresco 4.0.e Community, Share.

In the last couple of weeks some users are having trouble loading the Task list. Both in the My tasks dashlet on the Dashboard and under More… / My Tasks.

It either takes a very long time, or the list is not loaded at all. In the second case, in the dashlet the text "Loading…" never disappears, and under More… "Loading…" disappears after a while and "Error loading items" is displayed.


When looking at the request and the response using Chrome Developer Tools, the request looks like this:

https://HOST/share/proxy/alfresco/api/task-instances?authority=Debug&properties=bpm_priority,bpm_sta...‍


And the response (when it fails):

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><html><head><title>502 Proxy Error</title></head><body><h1>Proxy Error</h1><p>The proxy server received an invalidresponse from an upstream server.<br />The proxy server could not handle the request <em><a href="/share/proxy/alfresco/api/task-instances">GET /share/proxy/alfresco/api/task-instances</a></em>.<p>Reason: <strong>Error reading from remote server</strong></p></p><hr><address>Apache/2.2.23 (Amazon) Server at ec2-54-220-221-167.eu-west-1.compute.amazonaws.com Port 443</address></body></html>‍‍‍‍‍‍‍‍‍‍‍‍‍‍


In the alfresco.log we get a (WARN and INFO) java.net.SocketException: Broken pipe (see full stacktrace below) when the list fails to load.

14:18:36,494 WARN  [org.springframework.extensions.webscripts.connector.RemoteClient] Exception during close() of HTTP API connectionClientAbortException:  java.net.SocketException: Broken pipe        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:358)        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)        at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:309)        at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:273)        at org.apache.catalina.connector.CoyoteOutputStream.close(CoyoteOutputStream.java:104)        at org.springframework.extensions.webscripts.connector.RemoteClient.service(RemoteClient.java:1105)        at org.springframework.extensions.webscripts.connector.RemoteClient.call(RemoteClient.java:629)        at org.springframework.extensions.webscripts.connector.HttpConnector.call(HttpConnector.java:143)        at org.springframework.extensions.webscripts.connector.AuthenticatingConnector.call(AuthenticatingConnector.java:290)        at org.springframework.extensions.webscripts.servlet.mvc.EndPointProxyController.handleRequestInternal(EndPointProxyController.java:279)        at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)        at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)        at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:195)        at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:159)        at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:141)        at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:90)        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:417)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)        at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doFilter(SSOAuthenticationFilter.java:307)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)        at java.lang.Thread.run(Thread.java:662)Caused by: java.net.SocketException: Broken pipe        at java.net.SocketOutputStream.socketWrite0(Native Method)        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)        at java.net.SocketOutputStream.write(SocketOutputStream.java:136)        at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:741)        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)        at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:765)        at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:124)        at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:574)        at org.apache.coyote.Response.doWrite(Response.java:560)        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)        … 44 more14:18:36,495 INFO  [org.springframework.extensions.webscripts.connector.RemoteClient] Error status 500 nullClientAbortException:  java.net.SocketException: Broken pipe        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:358)        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)        at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381)        at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370)        at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)        at org.springframework.extensions.webscripts.connector.RemoteClient.service(RemoteClient.java:1072)        at org.springframework.extensions.webscripts.connector.RemoteClient.call(RemoteClient.java:629)        at org.springframework.extensions.webscripts.connector.HttpConnector.call(HttpConnector.java:143)        at org.springframework.extensions.webscripts.connector.AuthenticatingConnector.call(AuthenticatingConnector.java:290)        at org.springframework.extensions.webscripts.servlet.mvc.EndPointProxyController.handleRequestInternal(EndPointProxyController.java:279)        at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)        at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)        at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:195)        at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:159)        at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:141)        at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:90)        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:417)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)        at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doFilter(SSOAuthenticationFilter.java:307)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)        at java.lang.Thread.run(Thread.java:662)Caused by: java.net.SocketException: Broken pipe        at java.net.SocketOutputStream.socketWrite0(Native Method)        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)        at java.net.SocketOutputStream.write(SocketOutputStream.java:136)        at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:741)        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)        at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:765)        at org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:126)        at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:574)        at org.apache.coyote.Response.doWrite(Response.java:560)        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)        … 45 more‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍



Any advise on how to fix this problem?

Regards
Katarina Hallberg

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2 REPLIES 2

katarinahallber
Champ in-the-making
Champ in-the-making

‎11-01-2013 08:29 AM

Is there anyone out there that have experienced the same problem? In such case, did you manage to fix it?

The problem is getting worse and we are afraid our client will not be able to use Alfresco soon.

We suspect that the problem has to do with the amount of tasks in the database, could that be the case? If so is there a recommended way to delete old tasks?

Or might this be a problem that has been solved in newer versions, so the only way to solve it is to upgrade Alfresco? If so, should we be able to upgrade to 4.2.e Community (from 4.0.e Community) or are there any known issues with such an upgrade?

Regards
Katarina Hallberg

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mtsiak
Star Contributor
Star Contributor

‎07-19-2017 03:15 AM

We are having the same problem, and it is more and more frequent as our users increase

We are using alfresco community 5.0

2017-07-19 09:49:10,536  INFO  [webscripts.connector.RemoteClient] [ajp-bio-8009-exec-37] Exception calling (GET) http://......./alfresco/wcs/api/task-instances?authority=testfaculty&properties=bpm_priority,bpm_sta...
 2017-07-19 09:49:10,536  INFO  [webscripts.connector.RemoteClient] [ajp-bio-8009-exec-37] Error status 500 java.net.SocketException: Broken pipe
 org.apache.catalina.connector.ClientAbortException: java.net.SocketException: Broken pipe
        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:407)
        at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480)
        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
        at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:432)
        at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:420)
        at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91)
        at org.springframework.extensions.webscripts.connector.RemoteClient.copyResponseStreamOutput(RemoteClient.java:1305)
        at org.alfresco.web.scripts.SlingshotRemoteClient.copyResponseStreamOutput(SlingshotRemoteClient.java:190)
        at org.springframework.extensions.webscripts.connector.RemoteClient.service(RemoteClient.java:1194)
        at org.springframework.extensions.webscripts.connector.RemoteClient.call(RemoteClient.java:745)
        at org.springframework.extensions.webscripts.connector.HttpConnector.call(HttpConnector.java:143)
        at org.springframework.extensions.webscripts.servlet.mvc.EndPointProxyController.handleRequestInternal(EndPointProxyController.java:326)
        at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
        at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
        at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213)
        at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171)
        at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
        at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.alfresco.web.site.servlet.SecurityHeadersFilter.doFilter(SecurityHeadersFilter.java:168)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.alfresco.web.site.servlet.CSRFFilter.doFilter(CSRFFilter.java:322)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.alfresco.web.site.servlet.SSOAuthenticationFilter.doFilter(SSOAuthenticationFilter.java:533)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.alfresco.web.site.servlet.MTAuthenticationFilter.doFilter(MTAuthenticationFilter.java:74)
        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:220)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
        at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
        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: java.net.SocketException: Broken pipe
        at java.net.SocketOutputStream.socketWrite0(Native Method)
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
        at org.apache.coyote.ajp.AjpProcessor.output(AjpProcessor.java:298)
        at org.apache.coyote.ajp.AbstractAjpProcessor$SocketOutputBuffer.doWrite(AbstractAjpProcessor.java:1228)
        at org.apache.coyote.Response.doWrite(Response.java:499)
        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:402)
        ... 63 more

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