why happens ConcurrentModificationException ?
soso_xuc Nov 9, 2009 3:38 PMI have quite a big page running on Jboss and RF3.3.2.sr1
sometimes there appears error.
can someone tell me whats wrong ?
is this a result of flooding server with ajax requests ?
exception javax.servlet.ServletException javax.faces.webapp.FacesServlet.service(FacesServlet.java:277) org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178) org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) root cause java.util.ConcurrentModificationException java.util.AbstractList$Itr.checkForComodification(Unknown Source) java.util.AbstractList$Itr.next(Unknown Source) org.richfaces.component.UIScrollableDataTable.walk(UIScrollableDataTable.java:437) org.ajax4jsf.component.UIDataAdaptor.iterate(UIDataAdaptor.java:1025) org.ajax4jsf.component.UIDataAdaptor.encodeAjaxChild(UIDataAdaptor.java:496) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:146) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83) org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157) org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:123) org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:680) org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:551) javax.faces.component.UIComponent.encodeAll(UIComponent.java:930) com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) javax.faces.webapp.FacesServlet.service(FacesServlet.java:266) org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178) org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) note The full stack trace of the root cause is available in the JBossWeb/2.0.1.GA logs.