15-Nov-2018 19:39:57.356 INFO [org.sakaiproject.sitestats.impl.StatsUpdateManagerImpl] org.sakaiproject.sitestats.impl.StatsUpdateManagerImpl.parseSiteId Context information unavailable for event: sam.assessment.submit.checked (ignoring) 15-Nov-2018 19:40:26.851 ERROR [http-nio-20013-exec-18] org.sakaiproject.util.RequestFilter.doFilter org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:333) at org.apache.catalina.connector.OutputBuffer.appendByteArray(OutputBuffer.java:728) at org.apache.catalina.connector.OutputBuffer.append(OutputBuffer.java:657) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:368) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:346) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:96) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1090) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:454) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at org.apache.catalina.servlets.DefaultServlet.service(DefaultServlet.java:434) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:475) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:685) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) 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: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$NioSocketWrapper.doWrite(NioEndpoint.java:1196) at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:691) at org.apache.tomcat.util.net.SocketWrapperBase.writeBlocking(SocketWrapperBase.java:471) at org.apache.tomcat.util.net.SocketWrapperBase.write(SocketWrapperBase.java:409) at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.doWrite(Http11OutputBuffer.java:530) at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:73) at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:189) at org.apache.coyote.Response.doWrite(Response.java:599) at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:328) ... 36 more 15-Nov-2018 19:40:32.341 ERROR [http-nio-20013-exec-19] org.sakaiproject.util.RequestFilter.doFilter org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:333) at org.apache.catalina.connector.OutputBuffer.appendByteArray(OutputBuffer.java:728) at org.apache.catalina.connector.OutputBuffer.append(OutputBuffer.java:657) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:368) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:346) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:96) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1090) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:454) at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) at org.apache.catalina.servlets.DefaultServlet.service(DefaultServlet.java:434) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:475) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:491) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:685) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:764) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1388) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) 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: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$NioSocketWrapper.doWrite(NioEndpoint.java:1196) at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:691) at org.apache.tomcat.util.net.SocketWrapperBase.writeBlocking(SocketWrapperBase.java:471) at org.apache.tomcat.util.net.SocketWrapperBase.write(SocketWrapperBase.java:409) at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.doWrite(Http11OutputBuffer.java:530) at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:73) at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:189) at org.apache.coyote.Response.doWrite(Response.java:599) at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:328) ... 36 more