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Posted to dev@tapestry.apache.org by "Brian K. Wallace (JIRA)" <ta...@jakarta.apache.org> on 2006/04/25 23:39:08 UTC
[jira] Updated: (TAPESTRY-823) ConcurrentModificationException in
HTMLDescriptionReceiver
[ http://issues.apache.org/jira/browse/TAPESTRY-823?page=all ]
Brian K. Wallace updated TAPESTRY-823:
--------------------------------------
Component: Framework
> ConcurrentModificationException in HTMLDescriptionReceiver
> ----------------------------------------------------------
>
> Key: TAPESTRY-823
> URL: http://issues.apache.org/jira/browse/TAPESTRY-823
> Project: Tapestry
> Type: Bug
> Components: Framework
> Reporter: Paul Cantrell
>
> From the mailing list:
> This apparently resulted from HTMLDescriptionReceiver touching a previously uncached expression when calling ExpressionCache.getCompiledExpression().
> The easy solution looks like the right one: modify line 345 of HTMLDescriptionReceiver.java from this:
> Iterator i = values.iterator();
> ...to this:
> Iterator i = new ArrayList(values).iterator();
> Then the reporter will only print expressions that were cached at the time the report was started, ignoring any new additions to the caches during the report.
> Cheers,
> Paul
> ------------------------------------------------------------------------------------------------
> On Dec 27, 2005, at 10:48 AM, Jan Normann Nielsen wrote:
> Hello
> I hereby present a nasty stack trace I just received from Tapestry 4.0-rc2. Seems to be a concurrency issue, so it is hard (if not impossible) to reproduce. Should this be files as an issue?
> Best wishes,
> Jan
> 18:44:10,707 WARN [jetty] WARNING: Exception for /tapestry-test/app?page=DialogPageIframe&service=external&sp=SJzYPopWCUU
> org.apache.hivemind.ApplicationRuntimeException [classpath:/org/apache/tapestry/pages/Exception.page, line 22, column 65]
> at org.apache.tapestry.error.ExceptionPresenterImpl.presentException(ExceptionPresenterImpl.java:64)
> at $ExceptionPresenter_1086d518509.presentException($ExceptionPresenter_1086d518509.java)
> at org.apache.tapestry.engine.AbstractEngine.activateExceptionPage(AbstractEngine.java:121)
> at org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:280)
> at org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
> at $WebRequestServicer_1086d518563.service($WebRequestServicer_1086d518563.java)
> at $WebRequestServicer_1086d51855f.service($WebRequestServicer_1086d51855f.java)
> at org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
> at $ServletRequestServicer_1086d518543.service($ServletRequestServicer_1086d518543.java)
> at org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
> at $ServletRequestServicerFilter_1086d51853f.service($ServletRequestServicerFilter_1086d51853f.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
> at $ServletRequestServicerFilter_1086d51853d.service($ServletRequestServicerFilter_1086d51853d.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
> at $ServletRequestServicerFilter_1086d518541.service($ServletRequestServicerFilter_1086d518541.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at $ServletRequestServicer_1086d518537.service($ServletRequestServicer_1086d518537.java)
> at org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:123)
> at org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:79)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
> at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:342)
> at org.apache.tapestry.RedirectFilter.doFilter(RedirectFilter.java:103)
> at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:334)
> at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:286)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
> at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
> at org.mortbay.http.HttpServer.service(HttpServer.java:879)
> at org.jboss.jetty.Jetty.service(Jetty.java:460)
> at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
> at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
> at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
> at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
> at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
> Caused by: org.apache.hivemind.ApplicationRuntimeException [classpath:/org/apache/tapestry/pages/Exception.page, line 22, column 65]
> at org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:380)
> at org.apache.tapestry.services.impl.ResponseRendererImpl.renderResponse(ResponseRendererImpl.java:71)
> at $ResponseRenderer_1086d518519.renderResponse($ResponseRenderer_1086d518519.java)
> at org.apache.tapestry.error.ExceptionPresenterImpl.presentException(ExceptionPresenterImpl.java:46)
> ... 39 more
> Caused by: java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
> at java.util.HashMap$KeyIterator.next(HashMap.java:818)
> at org.apache.tapestry.describe.HTMLDescriptionReceiver.collection(HTMLDescriptionReceiver.java:361)
> at org.apache.tapestry.event.ReportStatusEvent.collection(ReportStatusEvent.java:52)
> at org.apache.tapestry.services.impl.ExpressionCacheImpl.reportStatus(ExpressionCacheImpl.java:49)
> at org.apache.tapestry.describe.ReportStatusHubImpl.fireReportStatus(ReportStatusHubImpl.java:67)
> at $ReportStatusHub_1086d518577.fireReportStatus($ReportStatusHub_1086d518577.java)
> at org.apache.tapestry.html.RequestDisplay$2.render(RequestDisplay.java:130)
> at org.apache.tapestry.components.Delegator.renderComponent(Delegator.java:44)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)
> at org.apache.tapestry.html.Shell.renderComponent(Shell.java:114)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:275)
> at org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:366)
> ... 42 more
> getRootCause():
> org.apache.hivemind.ApplicationRuntimeException [classpath:/org/apache/tapestry/pages/Exception.page, line 22, column 65]
> at org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:380)
> at org.apache.tapestry.services.impl.ResponseRendererImpl.renderResponse(ResponseRendererImpl.java:71)
> at $ResponseRenderer_1086d518519.renderResponse($ResponseRenderer_1086d518519.java)
> at org.apache.tapestry.error.ExceptionPresenterImpl.presentException(ExceptionPresenterImpl.java:46)
> at $ExceptionPresenter_1086d518509.presentException($ExceptionPresenter_1086d518509.java)
> at org.apache.tapestry.engine.AbstractEngine.activateExceptionPage(AbstractEngine.java:121)
> at org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:280)
> at org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
> at $WebRequestServicer_1086d518563.service($WebRequestServicer_1086d518563.java)
> at $WebRequestServicer_1086d51855f.service($WebRequestServicer_1086d51855f.java)
> at org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
> at $ServletRequestServicer_1086d518543.service($ServletRequestServicer_1086d518543.java)
> at org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
> at $ServletRequestServicerFilter_1086d51853f.service($ServletRequestServicerFilter_1086d51853f.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
> at $ServletRequestServicerFilter_1086d51853d.service($ServletRequestServicerFilter_1086d51853d.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
> at $ServletRequestServicerFilter_1086d518541.service($ServletRequestServicerFilter_1086d518541.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at $ServletRequestServicer_1086d518537.service($ServletRequestServicer_1086d518537.java)
> at org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:123)
> at org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:79)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
> at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:342)
> at org.apache.tapestry.RedirectFilter.doFilter(RedirectFilter.java:103)
> at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:334)
> at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:286)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
> at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
> at org.mortbay.http.HttpServer.service(HttpServer.java:879)
> at org.jboss.jetty.Jetty.service(Jetty.java:460)
> at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
> at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
> at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
> at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
> at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
> Caused by: java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
> at java.util.HashMap$KeyIterator.next(HashMap.java:818)
> at org.apache.tapestry.describe.HTMLDescriptionReceiver.collection(HTMLDescriptionReceiver.java:361)
> at org.apache.tapestry.event.ReportStatusEvent.collection(ReportStatusEvent.java:52)
> at org.apache.tapestry.services.impl.ExpressionCacheImpl.reportStatus(ExpressionCacheImpl.java:49)
> at org.apache.tapestry.describe.ReportStatusHubImpl.fireReportStatus(ReportStatusHubImpl.java:67)
> at $ReportStatusHub_1086d518577.fireReportStatus($ReportStatusHub_1086d518577.java)
> at org.apache.tapestry.html.RequestDisplay$2.render(RequestDisplay.java:130)
> at org.apache.tapestry.components.Delegator.renderComponent(Delegator.java:44)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)
> at org.apache.tapestry.html.Shell.renderComponent(Shell.java:114)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:275)
> at org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:366)
> ... 42 more
> getRootCause():
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)
> at java.util.HashMap$KeyIterator.next(HashMap.java:818)
> at org.apache.tapestry.describe.HTMLDescriptionReceiver.collection(HTMLDescriptionReceiver.java:361)
> at org.apache.tapestry.event.ReportStatusEvent.collection(ReportStatusEvent.java:52)
> at org.apache.tapestry.services.impl.ExpressionCacheImpl.reportStatus(ExpressionCacheImpl.java:49)
> at org.apache.tapestry.describe.ReportStatusHubImpl.fireReportStatus(ReportStatusHubImpl.java:67)
> at $ReportStatusHub_1086d518577.fireReportStatus($ReportStatusHub_1086d518577.java)
> at org.apache.tapestry.html.RequestDisplay$2.render(RequestDisplay.java:130)
> at org.apache.tapestry.components.Delegator.renderComponent(Delegator.java:44)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)
> at org.apache.tapestry.html.Shell.renderComponent(Shell.java:114)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)
> at org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)
> at org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:275)
> at org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:366)
> at org.apache.tapestry.services.impl.ResponseRendererImpl.renderResponse(ResponseRendererImpl.java:71)
> at $ResponseRenderer_1086d518519.renderResponse($ResponseRenderer_1086d518519.java)
> at org.apache.tapestry.error.ExceptionPresenterImpl.presentException(ExceptionPresenterImpl.java:46)
> at $ExceptionPresenter_1086d518509.presentException($ExceptionPresenter_1086d518509.java)
> at org.apache.tapestry.engine.AbstractEngine.activateExceptionPage(AbstractEngine.java:121)
> at org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:280)
> at org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
> at $WebRequestServicer_1086d518563.service($WebRequestServicer_1086d518563.java)
> at $WebRequestServicer_1086d51855f.service($WebRequestServicer_1086d51855f.java)
> at org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
> at $ServletRequestServicer_1086d518543.service($ServletRequestServicer_1086d518543.java)
> at org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
> at $ServletRequestServicerFilter_1086d51853f.service($ServletRequestServicerFilter_1086d51853f.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
> at $ServletRequestServicerFilter_1086d51853d.service($ServletRequestServicerFilter_1086d51853d.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
> at $ServletRequestServicerFilter_1086d518541.service($ServletRequestServicerFilter_1086d518541.java)
> at $ServletRequestServicer_1086d518545.service($ServletRequestServicer_1086d518545.java)
> at $ServletRequestServicer_1086d518537.service($ServletRequestServicer_1086d518537.java)
> at org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:123)
> at org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:79)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
> at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:342)
> at org.apache.tapestry.RedirectFilter.doFilter(RedirectFilter.java:103)
> at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:334)
> at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:286)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
> at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
> at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
> at org.mortbay.http.HttpServer.service(HttpServer.java:879)
> at org.jboss.jetty.Jetty.service(Jetty.java:460)
> at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
> at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
> at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
> at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
> at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
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