[richfaces-issues] [JBoss JIRA] Commented: (RF-10998) High CPU Utilization in Richfaces application

[Shah EM (JIRA)]

    [ https://issues.jboss.org/browse/RF-10998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12605119#comment-12605119 ] 

Shah EM commented on RF-10998:
------------------------------

Hi,

We have been facing an issue with the Request object in richFaces version and this issue has been logged under issue number 00479438.The response we got from the support forum was to try out with Richfaces Enterprise edition (Richfaces 3.3.1.SP2 ) to resolve the issue. 

As this is an issue in a production environment, it is not feasible for us to downgrade to the enterprise edition without considerable effort. Our organisation is moving in the open source direction, and such a response would not help us further this initiative within the organisation. 
 
We would really appreciate if you could suggest a solution to resolve the issue.

Regards,
Shah

> High CPU Utilization in Richfaces application
> ---------------------------------------------
>
>                 Key: RF-10998
>                 URL: https://issues.jboss.org/browse/RF-10998
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 3.3.2.SR1
>         Environment: Jboss 4.3.0.GA_CP03, jdk 1.6.0_05,jsf 1.2,facelets 1.1.14
>            Reporter: Shah EM
>              Labels: richfaces
>             Fix For: 3.Future
>
>
> We have an application running on 3 node 
> cluster.After running normally for some time one node CPU spikes to 80% from 
> the normal usage of 6% and stays like that. meanwhile other nodes are working 
> fine.
> We had contacted Redhat and they had advised to downgrad richfaces version to 3.3.1 sp2 to fix the issue.
> We have a doubt if the solution provided by Redhat to downgrade the rich faces version to 3.3.1-SP2 will solve the issue or not. 
> The 3.3.1-SP2 release note says that the following issue is fixed - [RF-7248] - a4j creates infinite HashMap.get loop
> When we looked into more details of this issue that they fixed in the JBoss JIRA for this defect, the logs say that the issue is with a specific component in the a4j. Please have a look at the following trace from the issue logs.
> Stack trace: 
> java.util.HashMap.get(HashMap.java:303)
> org.ajax4jsf.component.UIDataAdaptor.restoreChildState(UIDataAdaptor.java:965)
> org.ajax4jsf.component.UIDataAdaptor.restoreChildState(UIDataAdaptor.java:984)
> org.ajax4jsf.component.UIDataAdaptor.restoreChildState(UIDataAdaptor.java:943)
> In our case even though the issue is with the HashMap infinite loop, the cause of the issue does not seem to be this particular component. Our stack traces point to a different place where the infinite loop is happening.
> Thread: http-10.20.81.200-17180-31 : priority:5, demon:true, threadId:337, threadState:RUNNABLE, lockName:null
> java.util.HashMap.get(HashMap.java:305)
> org.apache.catalina.connector.Request.getAttribute(Request.java:878)
> org.apache.catalina.connector.RequestFacade.getAttribute(RequestFacade.java:263)
> com.sun.faces.application.WebappLifecycleListener.attributeReplaced(WebappLifecycleListener.java:168)
> com.sun.faces.config.ConfigureListener.attributeReplaced(ConfigureListener.java:318)
> org.apache.catalina.connector.Request.setAttribute(Request.java:1435)
> org.apache.catalina.connector.RequestFacade.setAttribute(RequestFacade.java:503)
> javax.servlet.ServletRequestWrapper.setAttribute(ServletRequestWrapper.java:284)
> com.sun.faces.context.RequestMap.put(ExternalContextImpl.java:1087)
> org.ajax4jsf.event.AjaxPhaseListener.afterPhase(AjaxPhaseListener.java:81)
> com.sun.faces.lifecycle.Phase.handleAfterPhase(Phase.java:175)
> com.sun.faces.lifecycle.Phase.doPhase(Phase.java:114)
> com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:104)
> com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
> javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206

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