The trace has more to do with concurrency than the number of requests. When the test driver uses only one thread, the trace was never observed, even after 1 million requests. When the test driver uses more than one threads, the trace can always be reproduced. For example, when the test driver used 10 threads and each thread executed 1000 requests, the trace was observed a couple of times within the total 10000 requests. It seems to indicate there is a thread safety issue.
Kevin
-----Original Message-----
From: Jitendra Kotamraju [mailto:Jitendra.Kotamraju_at_Sun.COM]
Sent: Wednesday, July 13, 2005 6:51 PM
To: users_at_jax-rpc.dev.java.net
Subject: Re: JAX-WS 2.0 EA2: Thread safety Error
Fung, Kevin [IT] wrote:
>The attached stack trace is generated when there is more than 1 concurrent soap requests. The trace happens about 5 times in 20000 - 50000 requests.
>
Thanks for pointing this. It needs more investigation as the most of the
server runtime classes are stateless.
Does it happen with less number of requests using multiple concurrent
soap requests ? We need to investigate if it is a thread safety issue or
load issue.
Jitu
>
>Load test environment:
>OS: Windows 2000 SP3
>JVM: 1.5.0_03-b07
>Tomcat: 5.5.9 (Connector properties in server.xml modified with maxKeepAliveRequests="-1" to support persistent HTTP connections for the test)
>JAX-WS 2: JAX-WS 2.0 EA2
>
>unexpected XML reader state. expected: END_DOCUMENT but found: UNKNOWN
> at com.sun.xml.ws.streaming.XMLStreamReaderUtil.verifyReaderState(XMLStreamReaderUtil.java:154)
> at com.sun.xml.ws.encoding.soap.SOAPDecoder.decodeEnvelope(SOAPDecoder.java:145)
> at com.sun.xml.ws.server.SOAPXMLDecoder.toInternalMessage(SOAPXMLDecoder.java:52)
> at com.sun.xml.ws.server.SOAPMessageDispatcher.toMessageInfo(SOAPMessageDispatcher.java:160)
> at com.sun.xml.ws.server.SOAPMessageDispatcher.receive(SOAPMessageDispatcher.java:123)
> at com.sun.xml.ws.server.Tie.handle(Tie.java:52)
> at com.sun.xml.ws.transport.http.servlet.JAXRPCServletDelegate.doPost(JAXRPCServletDelegate.java:342)
> at com.sun.xml.ws.transport.http.servlet.JAXRPCServlet.doPost(JAXRPCServlet.java:87)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
> at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
> at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
> at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
> at java.lang.Thread.run(Thread.java:595)
>
>Kevin Fung
>Sr. Architect
>GCAT Engineering
>Citigroup, Inc.
>kevin.fung_at_citigroup.com
>908-563-0546
>
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