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Posted to issues@cxf.apache.org by "Seumas Soltysik (JIRA)" <ji...@apache.org> on 2009/04/03 16:20:13 UTC
[jira] Updated: (CXF-2145) Proxy in JCA connector throws exception
due to concurrency issues
[ https://issues.apache.org/jira/browse/CXF-2145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Seumas Soltysik updated CXF-2145:
---------------------------------
Attachment: patch2.txt
This second patch simplifies the process of retreiving a new endpoint for each invocation. Instead of maintaining a pool of endpoint, the patch relies on the pooling of endpoint by the app server according to spec. After each invocation the endpoint is released and recycled by the application server.
> Proxy in JCA connector throws exception due to concurrency issues
> -----------------------------------------------------------------
>
> Key: CXF-2145
> URL: https://issues.apache.org/jira/browse/CXF-2145
> Project: CXF
> Issue Type: Bug
> Components: Integration
> Affects Versions: 2.1, 2.0.6, 2.2
> Reporter: Seumas Soltysik
> Attachments: patch.txt, patch2.txt
>
>
> A customer is having a problem with concurrent access to a JCA endpoint that is deployed in WebSphere. The stacktrace is below.
> They are running a 2.0.x version of CXF with WebSphere 6.1.0.19, HP/UX version B.11.23, Java 1.5.0.13 .
> The problem is that the JCA connector uses a single MDB/EJB proxy for all threads which is causing the exception to be thrown. The solution is to create a pool of proxies which can be accessed so that the proxy is used by no more than 1 thread at a time.
> [3/10/09 15:55:19:685 EDT] 0000042f DispatchMDBIn E Failed to obtain service object java:comp/env/GreeterWithWsdlLocalHome
> java.lang.IllegalStateException: Multiple threads can not use same MessageEndpoint proxy instance concurrently
> at com.ibm.ejs.container.MessageEndpointHandler.throwIllegalStateException(MessageEndpointHandler.java:599)
> at com.ibm.ejs.container.MessageEndpointHandler.checkState(MessageEndpointHandler.java:433)
> at com.ibm.ejs.container.MessageEndpointHandler.invokeMdbMethod(MessageEndpointHandler.java:889)
> at com.ibm.ejs.container.MessageEndpointHandler.invoke(MessageEndpointHandler.java:747)
> at $Proxy50.lookupTargetObject(Unknown Source)
> at org.apache.cxf.jca.inbound.DispatchMDBInvoker.getServiceObject(DispatchMDBInvoker.java:57)
> at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:51)
> at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:56)
> at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)
> at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:92)
> at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:221)
> at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:77)
> at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:280)
> at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:254)
> at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:70)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
> at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
> at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
> at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
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