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Posted to jcs-users@jakarta.apache.org by Aaron Smuts <as...@yahoo.com> on 2010/01/12 03:52:12 UTC
Re: Shutdownhook IndexedDiskCache - weblogic ClassNotFound issues
This looks like some kind of weblogic class loader issue. I don't use weblogic and don't know what the issue might be. It's not JCS related.
Good luck figuring it out. You might want to try registering a context listener that will call JCS shutdown rather than relying on JCS's shutdown hooks.
Aaron
--- On Wed, 12/30/09, Jan Vissers <Ja...@cumquat.nl> wrote:
> From: Jan Vissers <Ja...@cumquat.nl>
> Subject: Shutdownhook IndexedDiskCache - weblogic ClassNotFound issues
> To: jcs-users@jakarta.apache.org
> Date: Wednesday, December 30, 2009, 2:47 AM
> Hi,
>
> Migrating from OC4J to Weblogic we've noticed the following
> behavior, whenever shutting down the weblogic container:
>
> Exception in thread "Thread-24"
> java.lang.NoClassDefFoundError:
> org/apache/jcs/auxiliary/disk/indexed/IndexedDiskCache$1
> at
> org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache.processDispose(IndexedDiskCache.java:1054)
> at
> org.apache.jcs.auxiliary.AbstractAuxiliaryCacheEventLogging.disposeWithEventLogging(AbstractAuxiliaryCacheEventLogging.java:315)
> at
> org.apache.jcs.auxiliary.disk.AbstractDiskCache.doDispose(AbstractDiskCache.java:867)
> at
> org.apache.jcs.auxiliary.disk.AbstractDiskCache.dispose(AbstractDiskCache.java:508)
> at
> org.apache.jcs.engine.control.CompositeCache.dispose(CompositeCache.java:1368)
> at
> org.apache.jcs.engine.control.CompositeCacheManager.freeCache(CompositeCacheManager.java:482)
> at
> org.apache.jcs.engine.control.CompositeCacheManager.freeCache(CompositeCacheManager.java:469)
> at
> org.apache.jcs.engine.control.CompositeCacheManager.shutDown(CompositeCacheManager.java:513)
> at
> org.apache.jcs.engine.control.CompositeCacheManager$ShutdownHook.run(CompositeCacheManager.java:743)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache$1
> at
> weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:296)
> at
> weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:269)
> at
> weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:56)
> at
> java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at
> java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> at
> weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)
> at
> weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:37)
> at
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> ... 9 more
>
> We've already tried to use
> <prefer-web-inf-classes>true</prefer-web-inf-classes>
> setting of Weblogic, but that did not have the desired
> effect.
> Introducing the
> org.apache.jcs.utils.servlet.JCSServletContextListener made
> things a bit better, in that a shutdown done from within
> the admin console gracefully terminated JCS - i.e. the
> Shutdownhook thread didn't run. However this doesn't help us
> for situations where
> weblogic gets killed and/or Ctrl-C'ed.
>
> What are other things we could do/investigate?
>
> Thx,
> -J.
>
>
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Re: Shutdownhook IndexedDiskCache - weblogic ClassNotFound issues
Posted by Jan Vissers <Ja...@cumquat.nl>.
Hi Aaron,
I already registered the context listener, which helps when weblogic is
shutdown 'nicely' (using the console). Shutting down the container using
Ctrl-C, or killing it will throw an error as described earlier. It is
not a show stopper (I think) - but I don't like exceptions ;-)
Thx,
-J.
On Mon, 2010-01-11 at 18:52 -0800, Aaron Smuts wrote:
> This looks like some kind of weblogic class loader issue. I don't use weblogic and don't know what the issue might be. It's not JCS related.
>
> Good luck figuring it out. You might want to try registering a context listener that will call JCS shutdown rather than relying on JCS's shutdown hooks.
>
> Aaron
>
> --- On Wed, 12/30/09, Jan Vissers <Ja...@cumquat.nl> wrote:
>
> > From: Jan Vissers <Ja...@cumquat.nl>
> > Subject: Shutdownhook IndexedDiskCache - weblogic ClassNotFound issues
> > To: jcs-users@jakarta.apache.org
> > Date: Wednesday, December 30, 2009, 2:47 AM
> > Hi,
> >
> > Migrating from OC4J to Weblogic we've noticed the following
> > behavior, whenever shutting down the weblogic container:
> >
> > Exception in thread "Thread-24"
> > java.lang.NoClassDefFoundError:
> > org/apache/jcs/auxiliary/disk/indexed/IndexedDiskCache$1
> > at
> > org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache.processDispose(IndexedDiskCache.java:1054)
> > at
> > org.apache.jcs.auxiliary.AbstractAuxiliaryCacheEventLogging.disposeWithEventLogging(AbstractAuxiliaryCacheEventLogging.java:315)
> > at
> > org.apache.jcs.auxiliary.disk.AbstractDiskCache.doDispose(AbstractDiskCache.java:867)
> > at
> > org.apache.jcs.auxiliary.disk.AbstractDiskCache.dispose(AbstractDiskCache.java:508)
> > at
> > org.apache.jcs.engine.control.CompositeCache.dispose(CompositeCache.java:1368)
> > at
> > org.apache.jcs.engine.control.CompositeCacheManager.freeCache(CompositeCacheManager.java:482)
> > at
> > org.apache.jcs.engine.control.CompositeCacheManager.freeCache(CompositeCacheManager.java:469)
> > at
> > org.apache.jcs.engine.control.CompositeCacheManager.shutDown(CompositeCacheManager.java:513)
> > at
> > org.apache.jcs.engine.control.CompositeCacheManager$ShutdownHook.run(CompositeCacheManager.java:743)
> > Caused by: java.lang.ClassNotFoundException:
> > org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache$1
> > at
> > weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:296)
> > at
> > weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:269)
> > at
> > weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:56)
> > at
> > java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> > at
> > java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> > at
> > weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:177)
> > at
> > weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:37)
> > at
> > java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> > ... 9 more
> >
> > We've already tried to use
> > <prefer-web-inf-classes>true</prefer-web-inf-classes>
> > setting of Weblogic, but that did not have the desired
> > effect.
> > Introducing the
> > org.apache.jcs.utils.servlet.JCSServletContextListener made
> > things a bit better, in that a shutdown done from within
> > the admin console gracefully terminated JCS - i.e. the
> > Shutdownhook thread didn't run. However this doesn't help us
> > for situations where
> > weblogic gets killed and/or Ctrl-C'ed.
> >
> > What are other things we could do/investigate?
> >
> > Thx,
> > -J.
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: jcs-users-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail: jcs-users-help@jakarta.apache.org
> >
> >
>
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