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[jetty-discuss] [jira] Commented: (JETTY-524) A dead lock between threads was found when visit http
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From: Jan B. (JIRA) <ji...@co...> - 2008-03-10 03:20:31
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[ http://jira.codehaus.org/browse/JETTY-524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_126675 ]
Jan Bartel commented on JETTY-524:
----------------------------------
The changes work with Terracotta.
Jan
> A dead lock between threads was found when visit http
> -----------------------------------------------------
>
> Key: JETTY-524
> URL: http://jira.codehaus.org/browse/JETTY-524
> Project: Jetty
> Issue Type: Improvement
> Components: HTTP
> Affects Versions: 6.1.8
> Environment: Windows XP, Jetty 6.1.8
> Reporter: Fang Bing
> Assignee: Jan Bartel
>
> Found one Java-level deadlock:
> =============================
> "btpool0-1":
> waiting to lock monitor 0x00bb6458 (object 0xbaeb9850, a org.jboss.seam.interceptors.SynchronizationInterceptor),
> which is held by "btpool0-2"
> "btpool0-2":
> waiting to lock monitor 0x00bb64a0 (object 0xba6c2998, a com.sybase.djc.web.util.SessionManager$Session),
> which is held by "btpool0-1"
> Java stack information for the threads listed above:
> ===================================================
> "btpool0-1":
> at org.jboss.seam.interceptors.SynchronizationInterceptor.aroundInvoke(SynchronizationInterceptor.java:27)
> - waiting to lock <0xbaeb9850> (a org.jboss.seam.interceptors.SynchronizationInterceptor)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
> at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
> at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151)
> at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87)
> at com.sybase.it.class2.jsf.beans.CaseBean_$$_javassist_1.equals(CaseBean_$$_javassist_1.java)
> at org.mortbay.jetty.servlet.AbstractSessionManager$Session.setAttribute(AbstractSessionManager.java:1048)
> - locked <0xba6c2998> (a com.sybase.djc.web.util.SessionManager$Session)
> at org.jboss.seam.servlet.ServletSessionImpl.setAttribute(ServletSessionImpl.java:50)
> at org.jboss.seam.contexts.WebSessionContext.flush(WebSessionContext.java:101)
> at org.jboss.seam.contexts.Lifecycle.flushAndDestroyContexts(Lifecycle.java:430)
> at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:315)
> at org.jboss.seam.jsf.AbstractSeamPhaseListener.afterRender(AbstractSeamPhaseListener.java:256)
> at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:115)
> at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:92)
> at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:134)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
> at org.apache.myfaces.webapp.MyFacesServlet.service(MyFacesServlet.java:77)
> at web.components.s2t2.MyFacesServlet.service(MyFacesServlet.java:28)
> at web.components.s2t2.MyFacesServlet_DJC.access$201(MyFacesServlet_DJC.java:4)
> at web.components.s2t2.MyFacesServlet_DJC$3.invoke(MyFacesServlet_DJC.java:310)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.MyFacesServlet_DJC.service(MyFacesServlet_DJC.java:339)
> at web.components.s2t2.MyFacesServlet$WC.service(MyFacesServlet$WC.java:24)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
> at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:190)
> at web.components.s2t2.MyFacesExtensionsFilter.doFilter(MyFacesExtensionsFilter.java:28)
> at web.components.s2t2.MyFacesExtensionsFilter_DJC.access$101(MyFacesExtensionsFilter_DJC.java:4)
> at web.components.s2t2.MyFacesExtensionsFilter_DJC$2.invoke(MyFacesExtensionsFilter_DJC.java:180)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.MyFacesExtensionsFilter_DJC.doFilter(MyFacesExtensionsFilter_DJC.java:209)
> at web.components.s2t2.MyFacesExtensionsFilter$WC.doFilter(MyFacesExtensionsFilter$WC.java:24)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
> at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
> at web.components.s2t2.ajax4jsf.doFilter(ajax4jsf.java:28)
> at web.components.s2t2.ajax4jsf_DJC.access$101(ajax4jsf_DJC.java:4)
> at web.components.s2t2.ajax4jsf_DJC$2.invoke(ajax4jsf_DJC.java:180)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.ajax4jsf_DJC.doFilter(ajax4jsf_DJC.java:209)
> at web.components.s2t2.ajax4jsf$WC.doFilter(ajax4jsf$WC.java:24)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
> at web.components.s2t2.Seam_0020Redirect_0020Filter.doFilter(Seam_0020Redirect_0020Filter.java:28)
> at web.components.s2t2.Seam_0020Redirect_0020Filter_DJC.access$101(Seam_0020Redirect_0020Filter_DJC.java:4)
> at web.components.s2t2.Seam_0020Redirect_0020Filter_DJC$2.invoke(Seam_0020Redirect_0020Filter_DJC.java:180)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.Seam_0020Redirect_0020Filter_DJC.doFilter(Seam_0020Redirect_0020Filter_DJC.java:209)
> at web.components.s2t2.Seam_0020Redirect_0020Filter$WC.doFilter(Seam_0020Redirect_0020Filter$WC.java:24)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
> at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at com.sybase.djc.server.jetty.SybSessionHandler.handle(SybSessionHandler.java:147)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> at com.sybase.djc.server.jetty.SybWebAppContext.handle(SybWebAppContext.java:157)
> at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:223)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:313)
> at com.sybase.djc.server.jetty.JettyServer.handle(JettyServer.java:168)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
> at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:844)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> at org.mortbay.jetty.nio.BlockingChannelConnector$Connection.run(BlockingChannelConnector.java:164)
> at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
> "btpool0-2":
> at org.mortbay.jetty.servlet.AbstractSessionManager$Session.getAttribute(AbstractSessionManager.java:779)
> - waiting to lock <0xba6c2998> (a com.sybase.djc.web.util.SessionManager$Session)
> at org.jboss.seam.servlet.ServletSessionImpl.getAttribute(ServletSessionImpl.java:32)
> at org.jboss.seam.contexts.ServerConversationContext.get(ServerConversationContext.java:110)
> at org.jboss.seam.contexts.Contexts.lookupInStatefulContexts(Contexts.java:171)
> at org.jboss.seam.Component.getInstance(Component.java:1609)
> at org.jboss.seam.jsf.SeamVariableResolver.resolveVariable(SeamVariableResolver.java:53)
> at org.springframework.web.jsf.DelegatingVariableResolver.resolveVariable(DelegatingVariableResolver.java:108)
> at org.apache.myfaces.el.ValueBindingImpl$ELVariableResolver.resolveVariable(ValueBindingImpl.java:570)
> at org.apache.commons.el.NamedValue.evaluate(NamedValue.java:124)
> at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:386)
> at org.jboss.seam.core.Expressions$1.getValue(Expressions.java:69)
> at org.jboss.seam.Component.getValueToInject(Component.java:1877)
> at org.jboss.seam.Component.injectAttributes(Component.java:1368)
> at org.jboss.seam.Component.inject(Component.java:1195)
> at org.jboss.seam.interceptors.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:46)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
> at org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:27)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
> at org.jboss.seam.interceptors.SynchronizationInterceptor.aroundInvoke(SynchronizationInterceptor.java:31)
> - locked <0xbaeb9850> (a org.jboss.seam.interceptors.SynchronizationInterceptor)
> at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
> at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
> at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151)
> at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87)
> at com.sybase.it.class2.jsf.beans.CaseBean_$$_javassist_1.getSelectPanelBarItem(CaseBean_$$_javassist_1.java)
> at sun.reflect.GeneratedMethodAccessor223.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:457)
> at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:85)
> at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141)
> at com.sun.el.parser.AstValue.getValue(AstValue.java:96)
> at com.sun.el.parser.AstEqual.getValue(AstEqual.java:20)
> at com.sun.el.parser.AstAnd.getValue(AstAnd.java:20)
> at com.sun.el.parser.AstChoice.getValue(AstChoice.java:26)
> at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:183)
> at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
> at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)
> at javax.faces.component.html._ComponentUtils.getStringValue(_ComponentUtils.java:36)
> at javax.faces.component.html.HtmlPanelGrid.getStyleClass(HtmlPanelGrid.java:376)
> at sun.reflect.GeneratedMethodAccessor92.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at javax.faces.component._ComponentAttributesMap.getComponentProperty(_ComponentAttributesMap.java:387)
> at javax.faces.component._ComponentAttributesMap.get(_ComponentAttributesMap.java:235)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttribute(HtmlRendererUtils.java:535)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderHTMLAttributes(HtmlRendererUtils.java:549)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:93)
> at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
> at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:286)
> at org.ajax4jsf.renderkit.html.RepeatRenderer$1.process(RepeatRenderer.java:53)
> at org.ajax4jsf.model.SequenceDataModel.walk(SequenceDataModel.java:101)
> at org.ajax4jsf.component.UIDataAdaptor.walk(UIDataAdaptor.java:994)
> at org.ajax4jsf.renderkit.html.RepeatRenderer.encodeChildren(RepeatRenderer.java:59)
> at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
> at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
> at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
> at org.richfaces.renderkit.html.PanelBarItemRenderer.doEncodeChildren(PanelBarItemRenderer.java:165)
> at org.richfaces.renderkit.html.PanelBarItemRenderer.doEncodeChildren(PanelBarItemRenderer.java:160)
> at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
> at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
> at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
> at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
> at org.richfaces.renderkit.html.PanelBarRenderer.doEncodeChildren(PanelBarRenderer.java:148)
> at org.richfaces.renderkit.html.PanelBarRenderer.doEncodeChildren(PanelBarRenderer.java:143)
> at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
> at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
> at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
> at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
> at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199)
> at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194)
> at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
> at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:414)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:78)
> at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:78)
> at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
> at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
> at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
> at org.apache.myfaces.shared_impl.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:78)
> at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
> at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
> at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
> at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
> at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580)
> at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
> at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
> at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
> at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
> at org.apache.myfaces.webapp.MyFacesServlet.service(MyFacesServlet.java:77)
> at web.components.s2t2.MyFacesServlet.service(MyFacesServlet.java:28)
> at web.components.s2t2.MyFacesServlet_DJC.access$201(MyFacesServlet_DJC.java:4)
> at web.components.s2t2.MyFacesServlet_DJC$3.invoke(MyFacesServlet_DJC.java:310)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.MyFacesServlet_DJC.service(MyFacesServlet_DJC.java:339)
> at web.components.s2t2.MyFacesServlet$WC.service(MyFacesServlet$WC.java:24)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
> at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:190)
> at web.components.s2t2.MyFacesExtensionsFilter.doFilter(MyFacesExtensionsFilter.java:28)
> at web.components.s2t2.MyFacesExtensionsFilter_DJC.access$101(MyFacesExtensionsFilter_DJC.java:4)
> at web.components.s2t2.MyFacesExtensionsFilter_DJC$2.invoke(MyFacesExtensionsFilter_DJC.java:180)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.MyFacesExtensionsFilter_DJC.doFilter(MyFacesExtensionsFilter_DJC.java:209)
> at web.components.s2t2.MyFacesExtensionsFilter$WC.doFilter(MyFacesExtensionsFilter$WC.java:24)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
> at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
> at web.components.s2t2.ajax4jsf.doFilter(ajax4jsf.java:28)
> at web.components.s2t2.ajax4jsf_DJC.access$101(ajax4jsf_DJC.java:4)
> at web.components.s2t2.ajax4jsf_DJC$2.invoke(ajax4jsf_DJC.java:180)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.ajax4jsf_DJC.doFilter(ajax4jsf_DJC.java:209)
> at web.components.s2t2.ajax4jsf$WC.doFilter(ajax4jsf$WC.java:24)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
> at web.components.s2t2.Seam_0020Redirect_0020Filter.doFilter(Seam_0020Redirect_0020Filter.java:28)
> at web.components.s2t2.Seam_0020Redirect_0020Filter_DJC.access$101(Seam_0020Redirect_0020Filter_DJC.java:4)
> at web.components.s2t2.Seam_0020Redirect_0020Filter_DJC$2.invoke(Seam_0020Redirect_0020Filter_DJC.java:180)
> at com.sybase.djc.transaction.TransactionManager.invokeNotSupported1(TransactionManager.java:675)
> at com.sybase.djc.transaction.TransactionManager.invokeBeanManaged(TransactionManager.java:610)
> at web.components.s2t2.Seam_0020Redirect_0020Filter_DJC.doFilter(Seam_0020Redirect_0020Filter_DJC.java:209)
> at web.components.s2t2.Seam_0020Redirect_0020Filter$WC.doFilter(Seam_0020Redirect_0020Filter$WC.java:24)
> at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
> at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at com.sybase.djc.server.jetty.SybSessionHandler.handle(SybSessionHandler.java:147)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> at com.sybase.djc.server.jetty.SybWebAppContext.handle(SybWebAppContext.java:157)
> at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:223)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:313)
> at com.sybase.djc.server.jetty.JettyServer.handle(JettyServer.java:168)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
> at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:844)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> at org.mortbay.jetty.nio.BlockingChannelConnector$Connection.run(BlockingChannelConnector.java:164)
> at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
> Found 1 deadlock.
> I think that in org.mortbay.jetty.servlet.AbstractSessionManager.java ,the funciton getAttribute(String name) should not be synchronized. After I removed the key word "synchronized", the issue didn't exist.
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