[jboss-as7-dev] Second-level Cache in AS 7 Beta 3

Andrig Miller anmiller at redhat.com
Fri Apr 22 12:18:25 EDT 2011 


----- Original Message -----
> From: "Scott Marlow" <smarlow at redhat.com>
> To: "Andrig Miller" <anmiller at redhat.com>
> Cc: jboss-as7-dev at lists.jboss.org
> Sent: Friday, April 22, 2011 9:17:19 AM
> Subject: Re: [jboss-as7-dev] Second-level Cache in AS 7 Beta 3
> On 04/22/2011 10:30 AM, Andrig Miller wrote:
> >
> >
> > ----- Original Message -----
> >> From: "Scott Marlow"<smarlow at redhat.com>
> >> To: "Andrig Miller"<anmiller at redhat.com>
> >> Cc: jboss-as7-dev at lists.jboss.org
> >> Sent: Thursday, April 21, 2011 7:49:02 PM
> >> Subject: Re: [jboss-as7-dev] Second-level Cache in AS 7 Beta 3
> >> On 04/21/2011 05:46 PM, Andrig Miller wrote:
> >>>
> >>>
> >>> ----- Original Message -----
> >>>> From: "Scott Marlow"<smarlow at redhat.com>
> >>>> To: "Andrig Miller"<anmiller at redhat.com>
> >>>> Cc: jboss-as7-dev at lists.jboss.org
> >>>> Sent: Thursday, April 21, 2011 3:40:03 PM
> >>>> Subject: Re: [jboss-as7-dev] Second-level Cache in AS 7 Beta 3
> >>>> On 04/21/2011 05:12 PM, Andrig Miller wrote:
> >>>>>
> >>>>>
> >>>>> ----- Original Message -----
> >>>>>> From: "Scott Marlow"<smarlow at redhat.com>
> >>>>>> To: jboss-as7-dev at lists.jboss.org
> >>>>>> Sent: Thursday, April 21, 2011 2:57:08 PM
> >>>>>> Subject: Re: [jboss-as7-dev] Second-level Cache in AS 7 Beta 3
> >>>>>> On 04/21/2011 04:31 PM, Andrig Miller wrote:
> >>>>>>> I just tried deploying my application into AS 7 Beta 3 with
> >>>>>>> the
> >>>>>>> clustering, and the second-level cache enabled.
> >>>>>>>
> >>>>>>> Well, I received the following exception:
> >>>>>>>
> >>>>>>> Caused by: java.lang.ClassNotFoundException:
> >>>>>>> org.hibernate.cache.infinispan.JndiInfinispanRegionFactory
> >>>>>>> from
> >>>>>>> [Module "org.hibernate:main" from local module loader
> >>>>>>> @1fff7a1e
> >>>>>>> (roots: /root/jboss-7.0.0.Beta3/modules)]
> >>>>>>> at
> >>>>>>> org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:184)
> >>>>>>> [:1.0.0.Beta17]
> >>>>>>> at
> >>>>>>> org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:357)
> >>>>>>> [:1.0.0.Beta17]
> >>>>>>> at
> >>>>>>> org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:329)
> >>>>>>> [:1.0.0.Beta17]
> >>>>>>> at
> >>>>>>> org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:306)
> >>>>>>> [:1.0.0.Beta17]
> >>>>>>> at
> >>>>>>> org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:100)
> >>>>>>> [:1.0.0.Beta17]
> >>>>>>> at java.lang.Class.forName0(Native Method) [:1.6.0_20]
> >>>>>>> at java.lang.Class.forName(Class.java:186) [:1.6.0_20]
> >>>>>>> at
> >>>>>>> org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
> >>>>>>> at
> >>>>>>> org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:409)
> >>>>>>> ... 12 more
> >>>>>>>
> >>>>>>> It turns out the Hibernate module doesn't seem to include the
> >>>>>>> classes for the second-level cache. I don't even see the old
> >>>>>>> JBoss
> >>>>>>> Cache stuff in those jars.
> >>>>>>>
> >>>>>>> Is there a reason why this is missing? This makes it
> >>>>>>> impossible
> >>>>>>> to
> >>>>>>> actually test this functionality.
> >>>>>>
> >>>>>> Your ahead of us.
> >>>>>>
> >>>>>> I created JBAS-9378 for adding the Infinispan dependency to the
> >>>>>> Hibernate module.
> >>>>>
> >>>>> But the Hibernate classes aren't even there in the Hibernate
> >>>>> jars
> >>>>> for the module. Will this change the build?
> >>>>
> >>>> Its easy to include the additional 2lc interface jars that we
> >>>> want.
> >>>> The
> >>>> question for me is about native Hibernate applications that want
> >>>> to
> >>>> cluster (the 2lc) and what we do for them in AS7.
> >>>
> >>> In looking at the Hibernate distribution from SourceForge, the
> >>> classes that are missing should be in the Hibernate core jar
> >>> files,
> >>> there are not in different jars, so I'm wondering what's going on
> >>> with the build process. In fact the org/hibernate/cache directory
> >>> is
> >>> there, but its missing the packages for infinispan, jboss cache
> >>> and
> >>> jboss cache 2 (i.e. org/hibernate/cache/infinispan,
> >>> org/hibernate/cache/jbc, and org/hibernate/cache/jbc2).
> >>>
> >>> Andy
> >>
> >> I pulled down a copy of hibernate-distribution-3.6.1.Final and the
> >> Infinispan 2lc cache jars are in
> >> hibernate-distribution-3.6.1.Final/infinispan-core-4.2.1.CR1.jar
> >>
> >> Looking for the similar maven artifact that matches up, i see
> >> org.hibernate:hibernate-infinispan also has
> >> org/hibernate/cache/infinispan but I need to do a proper
> >> integration
> >> of
> >> that into AS7.
> >>
> >> My quick attempt to bring in the Infinispan 2lc, leads to
> >> http://pastie.org/1821155 (looks like a TCCL issue that we will
> >> have
> >> to
> >> deal with).
> >>
> >> Even if this worked, we are not ready to cluster the 2lc cache yet.
> >>
> >
> > Okay. Just as a side not the latest Hibernate release is now 3.6.3
> > (not including the 4.0.0.Alpha(n) of course).
> >
> > Once this gets in correctly, I would like to be notified. If I watch
> > the JIRA you opened would that be sufficient, or will this be a
> > bigger scope than that single JIRA?
> 
> JBAS-9378 is now AS7-488, due to the recent separation of AS7 jiras. I
> also retitled it to be more reflective of the specific underlying
> issue
> to be solved.
> 
> There are larger scope issues not covered by AS7-488. Clustering the
> second level cache properly, is not covered and not yet in JIRA.
> 
> A related effort, is switching to Hibernate 4.0 (AS7-396), which will
> happen on a separate branch. Steve and I, are hacking away against
> https://github.com/scottmarlow/jboss-as/tree/hibernate40_2 for this
> effort. I'm thinking that our efforts to solve the classloader issues,
> behind the 2LC failure, will go into Hibernate 4.0.
> 
> So, there are definitely bigger scopes involved (in clustering and
> Hibernate integration).
> 
> Scott

I'm a little concerned with the plan here.  Hibernate 4 is still way behind the curve for inclusion into AS 7, as there is only beta 4 left before CR and then Final.  The fallback has always been 3.6.x.  If 4 doesn't make it in time, and we only fix the classloader problems in 4, we are screwing up the backup plan.

Andy

> >
> > Andy
> >
> >>>
> >>>>>
> >>>>>>
> >>>>>>>
> >>>>>>> Andy
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> jboss-as7-dev mailing list
> >>>>>>> jboss-as7-dev at lists.jboss.org
> >>>>>>> https://lists.jboss.org/mailman/listinfo/jboss-as7-dev
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> jboss-as7-dev mailing list
> >>>>>> jboss-as7-dev at lists.jboss.org
> >>>>>> https://lists.jboss.org/mailman/listinfo/jboss-as7-dev

More information about the jboss-as7-dev mailing list