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Tomcat servlet mapping error after Broken pipe error

 
thiru chakra
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We have implemented Servlet 3.0 AsyncContext in Tomcat Version:7.0.23.

It is runing in RHEL 6.1 using OpenJDK version 1.6.0_24,64-bit server

The app is working fine for most part. When there is some disturbance in the network, the update from the server is not able to reach the client as there is a "ClientAbortException: java.net.SocketException: Broken pipe" exception. which is caught and ignored.

This happens in the line,

asyncContext.getResponse().getWriter().println(updateStr);

After this Tomcat goes crazy and is routing URLs to unexpected servlets. For example with a mapping of /query to a servlet called SessionManager, the URL mysite.com/index.html is routed to the SessionManager servlet. Only restart of tomcat solves the problem.

Any pointers on why this is happening and how to solve this?
 
Tim Holloway
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Have you tried using the Oracle/Sun JDK instead of OpenJDK?

It has only been very recently that I've heard anyone say that OpenJDK is ready for production J2EE use.
 
thiru chakra
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Thanks for the reply. Tried using the Oracle/Sun JDK also. But encounters the same problem. To add more data, the following is the stack trace of the exception.

ClientAbortException: java.net.SocketException: Broken pipe
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:346)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:306)
at org.apache.catalina.connector.Response.flushBuffer(Response.java:568)
at org.apache.catalina.connector.ResponseFacade.flushBuffer(ResponseFacade.java:307)
at com.management.TestHandler$TestInfo.statusUpdate(TestHandler.java:638)
at com.chakra.ipbtt.TestObject.publish(TestObject.java:1626)
at com.chakra.ipbtt.TestObject.handlePublish(TestObject.java:1421)
at com.chakra.ipbtt.TestObject.executeCommand(TestObject.java:1371)
at com.chakra.ipbtt.TestObject.executeCommand(TestObject.java:1388)
at com.chakra.ipbtt.TestObject.executeCommand(TestObject.java:1388)
at com.chakra.ipbtt.TestObject.executeCommand(TestObject.java:1388)
at com.chakra.ipbtt.TestObject.executeCommand(TestObject.java:1388)
at com.chakra.ipbtt.TestObject.executeCommand(TestObject.java:1388)
at com.chakra.ipbtt.TestObject.executeTest(TestObject.java:1791)
at com.management.TestHandler.executeTest(TestHandler.java:420)
at com.management.TestHandler.handleNewTest(TestHandler.java:222)
at com.management.TestMgr.processRequest(TestMgr.java:71)
at com.management.TestMgr.doPost(TestMgr.java:105)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:690)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:477)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.management.SessionMgr.processRequest(SessionMgr.java:131)
at com.management.SessionMgr.doPost(SessionMgr.java:164)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.management.SessionsFilter.doFilter(SessionsFilter.java:127)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)

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.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:462)
at org.apache.coyote.http11.InternalOutputBuffer.flush(InternalOutputBuffer.java:119)
at org.apache.coyote.http11.AbstractHttp11Processor.action(AbstractHttp11Processor.java:789)
at org.apache.coyote.Response.action(Response.java:174)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:341)
... 48 more`
 
It is sorta covered in the JavaRanch Style Guide.
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