Re: ClassCastException and Server Crash when using MruCacheStorage

I have requested our middle-ware team to turn the complete debugging on. We'll 
let you know as soon as this issue surfaces again. But it will very soon. 

As you can see from the errors below, when the server stops responding, the last 
thing we notice are the MruCacheStorage errors being logged. 

I'll keep you posted.

Thanks for looking into this issue.
Best Regards
Ram
 



________________________________
From: Daniel Dekany <[email protected]>
To: Ram Palagummi <[email protected]>
Cc: Attila Szegedi <[email protected]>; FreeMarker-user 
<[email protected]>
Sent: Tue, March 22, 2011 11:30:33 AM
Subject: Re: [FreeMarker-user] ClassCastException and Server Crash when using 
MruCacheStorage

No stack trace? /-:


Tuesday, March 22, 2011, 5:25:11 PM, Ram Palagummi wrote:

> Hi Attila,
>
> Please see below the error messages. It seems evident that the
> error is caused due to MruCacheStorage access for a template. Please
> let me know if there is anything I can provide to help you. 
>
> After getting these message for a while, we are forced to restart the servers.
>
> 2011-03-19 00:31:22,135 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:23,300 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:24,943 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:25,623 ERROR
> com.emc.oneemc.web.filter.URLProcessingFilter - method: getLocaleForDomain()
> message: Locale not exist for domain
> :www.informationwatch.net....... Setting to US locale
> 2011-03-19 00:31:25,639 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:26,244 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:26,759 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:26,814 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> 2011-03-19 00:31:26,954 ERROR
> com.emc.oneemc.web.view.EMCFreemarkerView - method: renderMergedTemplateModel
> message: ERROR while processing freemarker template:
> java.lang.ClassCastException:
> freemarker.cache.MruCacheStorage$MruReference
> <Mar 19, 2011 12:31:27 AM EDT> <Alert> <WebLogicServer>
> <BEA-000396> <Server shutdown has been requested by weblogic> 
> <Mar 19, 2011 12:31:27 AM EDT> <Notice> <WebLogicServer>
> <BEA-000365> <Server state changed to FORCE_SUSPENDING> 
> <Mar 19, 2011 12:31:28 AM EDT> <Notice> <WebLogicServer>
> <BEA-000365> <Server state changed to ADMIN> 
> <Mar 19, 2011 12:31:28 AM EDT> <Notice> <WebLogicServer>
> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN> 
> <Mar 19, 2011 12:31:28 AM EDT> <Notice> <Server> <BEA-002607>
> <Channel "Default" listening on 128.221.59.51:7012 was shutdown.> 
> <Mar 19, 2011 12:31:28 AM EDT> <Notice> <Server> <BEA-002607>
> <Channel "Default[1]" listening on 127.0.0.1:7012 was shutdown.> 
>
>
> Thanks
> Ram
>
> From: Attila Szegedi <[email protected]>
> To: FreeMarker-user <[email protected]>
> Cc: Ram Palagummi <[email protected]>
> Sent: Mon, March 21, 2011 2:33:19 PM
> Subject: Re: [FreeMarker-user] ClassCastException and Server Crash when using 
>MruCacheStorage
>
> Can you capture a full stack trace? 
>
> On Mar 21, 2011, at 11:32 AM, Ram Palagummi wrote:
>
> Hi,
>
> I am an architect from EMC corporation and we have been using
> FreeMarker for rendering our emc.com and few other application web
> pages. We deployed new EMC.com towards the end of 2007 and the
> FreeMarker version we went live with is 2.3.10.
>
> We have been noticing that anytime  MruCacheStorage (strong = 0 and
> soft=500 or any other settings) is turned on for template caching,
> we are getting the following error and the servers have to be
> bounced in order to fix the problem. 
>
> ERROR while processing freemarker
> template:java.lang.CLassCastException :
> freemarker.cache.MruCacheStorage$MruReference.
>
> Additionally, we are seeing the intermittent 404 issues when
> freemarker is trying to load template from its cache causing panic within our 
>user community.
>
> Its critical that we resolve this issue right away. Please let us
> know if this is a known issue and has a fix. 
>
> Thanks
> Solution Architect 
> EMC Corporation

-- 
Best regards,
Daniel Dekany

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