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Re: webapp spring roots
by Tim Eck
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Rate this Message:
I apologize I haven't been following every message in this conversation,
but this looks like a known limitation in terracotta. Every object that is
clustered carries information that describes which class loader created
(such that we can locate the same logical loader on other nodes). This
makes for issue fore sharing between different app servers (or an app
server and a standalone vanilla java process for that matter).
There a few workarounds, but nothing too pretty really. One is to use a
class loader that is guaranteed to be available on both VMs (ie.
CLASSPATH).
One thing we've thought about doing (but is yet to be implemented) is to
name web application class loaders in the same manner no matter which app
server is being used. This would probably enable your use case to work
(assuming you're using the same context paths on both jetty and tomcat)
> -----Original Message-----
> From: tc-users-bounces@... [mailto:tc-users-
> bounces@...] On Behalf Of Fernando Padilla
> Sent: Tuesday, February 26, 2008 2:10 PM
> To: tc-users@...
> Subject: Re: [tc-users] webapp spring roots
>
> I did as you suggested. I loaded the app under tomcat, and it works as
> usual. Then I shutdown tomcat and ran it under jetty and got this
> exception:
>
> 7233 [main] INFO com.tcspring.DistributableBeanFactoryMixin - ptAppsRoot
> registering transient fields for tc-cache-map-factory
> com.protrade.common.cache.CacheFactory
> com.tc.exception.TCClassNotFoundException:
> java.lang.ClassNotFoundException: No registered loader for description:
> Tomcat.Catalina:localhost:/fbracket, trying to load
> com.tcspring.ComplexBeanId
> at
>com.tc.object.ClientObjectManagerImpl.lookupOrCreateRoot(ClientObjectManag
> erImpl.java:600)
> at
>
com.tc.object.bytecode.ManagerImpl.lookupOrCreateRoot(ManagerImpl.java:287
> )
> at
>
com.tc.object.bytecode.ManagerImpl.lookupOrCreateRoot(ManagerImpl.java:266
> )
> at
>
com.tc.object.bytecode.ManagerUtil.lookupOrCreateRoot(ManagerUtil.java:130
> )
> at
>
com.tcspring.DistributableBeanFactoryMixin$ManagerUtilWrapperImpl.lookupOr
> CreateRoot(DistributableBeanFactoryMixin.java:419)
> at
>
com.tcspring.DistributableBeanFactoryMixin.registerBeanDefinitions(Distrib
> utableBeanFactoryMixin.java:221)
> at
>
org.springframework.beans.factory.support.AbstractBeanFactory.registerBean
> Definitions(AbstractBeanFactory.java)
> ....
> ...
>
>
>
>
> Eugene Kuleshov wrote:
> > Hi Fernando,
> >
> > By default Terracotta for Spring is naming those roots usingsynthetic
> > name derived from the matching web application name and matching
spring
> > config names. There is a FAQ entry about that in the "Troubleshooting
> > Guide" linked from the on Terracotta home page. See
> >
>
https://terracotta.org/confluence/display/wiki/Troubleshooting+Guide#Troub
> leshootingGuide-TerracottaforSpring...
> >
> > So you can override that root name in your tc-config.xml using
> > <root-name> element:
> >
> > ...
> > <application>
> > <spring>
> > <jee-application>
> > <application-contexts>
> > <application-context>
> > <root-name>myClusteredSpringContext</root-name>
> > ...
> >
> > regards,
> > Eugene Kuleshov
> >
> > PS: it feels like I am the only one answering all the questions today,
> > but by strange coincidence those happens to be from my area ofexpertise
> >
> >
> > Fernando Padilla wrote:
> >> I want to run my webapp through tomcat, jetty and mvn jetty:run, but
> >> when I did, I noticed that terracotta was generating unique roots for
> >> different ways that I launch the web application; and for each
> different
> >> context path that I launch my webapp under.. ( so developers can't
> share
> >> roots )
> >>
> >> This is very disappointing. How can I get this working?
> >>
> >> -------
> >> tc:spring_info.appName is coming up with different things:
> >>
> >> fbracket
> >> Jetty.path=/fbracket
> >> Jetty.path=/fannetwork
> >>
> >
> >
> >
> > _______________________________________________
> > tc-users mailing list
> > tc-users@...
> > http://lists.terracotta.org/mailman/listinfo/tc-users
> _______________________________________________
> tc-users mailing list
> tc-users@...
> http://lists.terracotta.org/mailman/listinfo/tc-users
_______________________________________________
tc-users mailing list
tc-users@...
http://lists.terracotta.org/mailman/listinfo/tc-users
but this looks like a known limitation in terracotta. Every object that is
clustered carries information that describes which class loader created
(such that we can locate the same logical loader on other nodes). This
makes for issue fore sharing between different app servers (or an app
server and a standalone vanilla java process for that matter).
There a few workarounds, but nothing too pretty really. One is to use a
class loader that is guaranteed to be available on both VMs (ie.
CLASSPATH).
One thing we've thought about doing (but is yet to be implemented) is to
name web application class loaders in the same manner no matter which app
server is being used. This would probably enable your use case to work
(assuming you're using the same context paths on both jetty and tomcat)
> -----Original Message-----
> From: tc-users-bounces@... [mailto:tc-users-
> bounces@...] On Behalf Of Fernando Padilla
> Sent: Tuesday, February 26, 2008 2:10 PM
> To: tc-users@...
> Subject: Re: [tc-users] webapp spring roots
>
> I did as you suggested. I loaded the app under tomcat, and it works as
> usual. Then I shutdown tomcat and ran it under jetty and got this
> exception:
>
> 7233 [main] INFO com.tcspring.DistributableBeanFactoryMixin - ptAppsRoot
> registering transient fields for tc-cache-map-factory
> com.protrade.common.cache.CacheFactory
> com.tc.exception.TCClassNotFoundException:
> java.lang.ClassNotFoundException: No registered loader for description:
> Tomcat.Catalina:localhost:/fbracket, trying to load
> com.tcspring.ComplexBeanId
> at
>
> erImpl.java:600)
> at
>
com.tc.object.bytecode.ManagerImpl.lookupOrCreateRoot(ManagerImpl.java:287
> )
> at
>
com.tc.object.bytecode.ManagerImpl.lookupOrCreateRoot(ManagerImpl.java:266
> )
> at
>
com.tc.object.bytecode.ManagerUtil.lookupOrCreateRoot(ManagerUtil.java:130
> )
> at
>
com.tcspring.DistributableBeanFactoryMixin$ManagerUtilWrapperImpl.lookupOr
> CreateRoot(DistributableBeanFactoryMixin.java:419)
> at
>
com.tcspring.DistributableBeanFactoryMixin.registerBeanDefinitions(Distrib
> utableBeanFactoryMixin.java:221)
> at
>
org.springframework.beans.factory.support.AbstractBeanFactory.registerBean
> Definitions(AbstractBeanFactory.java)
> ....
> ...
>
>
>
>
> Eugene Kuleshov wrote:
> > Hi Fernando,
> >
> > By default Terracotta for Spring is naming those roots using
> > name derived from the matching web application name and matching
spring
> > config names. There is a FAQ entry about that in the "Troubleshooting
> > Guide" linked from the on Terracotta home page. See
> >
>
https://terracotta.org/confluence/display/wiki/Troubleshooting+Guide#Troub
> leshootingGuide-TerracottaforSpring...
> >
> > So you can override that root name in your tc-config.xml using
> > <root-name> element:
> >
> > ...
> > <application>
> > <spring>
> > <jee-application>
> > <application-contexts>
> > <application-context>
> > <root-name>myClusteredSpringContext</root-name>
> > ...
> >
> > regards,
> > Eugene Kuleshov
> >
> > PS: it feels like I am the only one answering all the questions today,
> > but by strange coincidence those happens to be from my area of
> >
> >
> > Fernando Padilla wrote:
> >> I want to run my webapp through tomcat, jetty and mvn jetty:run, but
> >> when I did, I noticed that terracotta was generating unique roots for
> >> different ways that I launch the web application; and for each
> different
> >> context path that I launch my webapp under.. ( so developers can't
> share
> >> roots )
> >>
> >> This is very disappointing. How can I get this working?
> >>
> >> -------
> >> tc:spring_info.appName is coming up with different things:
> >>
> >> fbracket
> >> Jetty.path=/fbracket
> >> Jetty.path=/fannetwork
> >>
> >
> >
> >
> > _______________________________________________
> > tc-users mailing list
> > tc-users@...
> > http://lists.terracotta.org/mailman/listinfo/tc-users
> _______________________________________________
> tc-users mailing list
> tc-users@...
> http://lists.terracotta.org/mailman/listinfo/tc-users
_______________________________________________
tc-users mailing list
tc-users@...
http://lists.terracotta.org/mailman/listinfo/tc-users
« Return to Thread: webapp spring roots
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