jboss 4.2 and log4j nightmare

[meissa]

Hi jboss guys,
We are been more and more to suffer about the Impossibility to override
log4j.jar in jboss 4.2 version.
The classloading isolation configuration that is explained in the wiki is not working at all.
Jboss still complain when we put log4j.jar in our appllications librairies.

Can you please,please,please give to us a real solution to get rif of this problem.
Removing log4j.jar from our librairies is not a solution.
here is the well known exption trace:

log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
log4j:ERROR [WebappClassLoader
 delegate: false
 repositories:
 /WEB-INF/classes/
----------> Parent Classloader:
java.net.FactoryURLClassLoader@18c10af
] whereas object of type
log4j:ERROR "org.jboss.logging.appender.FileAppender" was loaded by [org.jboss.system.server.NoAnnotationURLClassLoader@1a33d48].
log4j:ERROR Could not instantiate appender named "FILE".

Any help is greetly appreciated.

Meisssa

[dimitris]

So you've tried http://wiki.jboss.org/wiki/Wiki.jsp?page=ClassLoaderScoping and it doesn't work for you?

(you don't even have to rename conf/log4j.xml, it is already renamed)

There is a testcase in the jboss testsuite for this exact scenario:

org.jboss.test.classloader.test.ScopingUnitTestCase

[meissa]

It's still not working.
Could you please send me the sample application that is supposed to work.
Maybe i have a wrong lo4j.jar librairie (I don't believe that but ...)

I'm really blocked by this situation.

thanks in advance for your feedback.

Meissa

[dimitris]

I don't know where this attachement has gone, so you need to revert to the testcase.

If you build the testsuite from source, look for:
testsuite/output/lib/log4j113.war

[meissa]

I don't know where this attachement has gone, so you need to revert to the testcase.

If you build the testsuite from source, look for:
testsuite/output/lib/log4j113.war

I'm using jboss 4.2.0 and I don't have the testsuite/output/lib/ folder.

Meissa

[dimitris]

You need to grab the source and build it.

[cwele]

"meissa" wrote:
Hi jboss guys,
We are been more and more to suffer about the Impossibility to override
log4j.jar in jboss 4.2 version.
The classloading isolation configuration that is explained in the wiki is not working at all.
Jboss still complain when we put log4j.jar in our appllications librairies.

Can you please,please,please give to us a real solution to get rif of this problem.

- did you solve this problem ? I have exactly the same ...

[jismolv]

did you solve this probelm? even i too have the same problem. Please help.

[pisce]

For all those who encounter this issue: try to know if you're deploying a webapp that has its own log4j.jar

Since JBoss has already a log4j.jar, you can obtain this error if both versions are not the same. Just remove log4j.jar from you webapp's WEB-INF/lib when deploying (an exclude might be enough in your ant file)

Take a look to the lasts posts here:

http://www.dcm4che.org/jira/browse/OV-28?focusedCommentId=10959#action_10959