I think what is happening here is what you tend to see in the standard
JBoss classloader . JRun probably loaded some of the log4j classes at
startup from its log4j jar. Now Jetspeed 2 required those classes but
instead of the JRun classloaders loading new ones from the WEB-INF/lib
it just used the ones it already loaded from its server classloader.
Next what probably happened is J2 tried to load up a couple more log4j
classes that had not been loaded yet in any classloader yet. So those
classes where loaded from the WEB-INF/lib jar. Finally when the app
tried to mix these classes, a classcast was thrown. Even if the two
jars were identical, this would have happened because for 2 classes to
be considered the same they have to be loaded from the same
classloader. If they were not loaded from the same classloader a CCE is
thrown even if they are, in all other ways, identical.
This is just a theory though, and I could be totally wrong ;)
Stathis, George wrote:
Figured out the problem. It was indeed a conflict between the log4j
versions, but somehow, the Jetspeed application was not picking up the log4j
jar in its own WEB-INF\lib directory, but rather, the log4j classes in the
JRUN_HOME\lib\oem-xdoclet.jar.
The problem was rectified by taking the Jetspeed log4j jar out of the
jetspeed WEB-INF\lib and putting it in JRUN_HOME\servers\lib. This is a bit
unorthodox though. Shouldn't the application specific jars in WEB-INF\lib be
overriding the other classpaths?
Anyway, thanks to Scott for taking the time to help out!
-----Original Message-----
From: Stathis, George [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 14, 2004 10:47 AM
To: 'Jetspeed Users List'
Subject: RE: Running Jetspeed 1.5 on JRun4
Thank you for the prompt reply. I'm running J1.5 by the way. I just tried
your suggestion and the problem persists in the exact same way (same
messages).
Looking at the classpath available to the JRun JVM, I see that there are two
versions of log4j *in addition* to the one in Jetspeed itself. They both
come built-in JRun. One is in:
%JRUN_HOME%\servers\cfusion\cfusion-ear\cfusion-war\WEB-INF\cfusion\lib\log4
j.jar
The other in:
%JRUN_HOME%\lib\oem-xdoclet.jar
which contains open source libraries, one of which is log4j. Both
directories above are in the JVM classpath. For a test, I put back the log4j
jar in jetspeed/WEB-INF/lib and *removed* the two directories above from the
class path. Same error.
Then, I removed the log4j jar from jetspeed/WEB-INF/lib again, and also left
out the two directories above from the classpath. Different error:
(!) NOTICE: Turbine: init() failed: java.lang.NoClassDefFoundError:
org/apache/log4j/LogManager
Ahaa! "NoClassDefFoundError" Now I know that log4j is completely out of the
classpath.
I re-tested now by putting back into the classpath each jar one by one.
Results:
The
%JRUN_HOME%\servers\cfusion\cfusion-ear\cfusion-war\WEB-INF\cfusion\lib\log4
j.jar is not being picked up. If it's the only one in the classpath, I still
get a "NoClassDefFoundError" error. But both the
%JRUN_HOME%\lib\oem-xdoclet.jar and the Jetspeed log4j.jar cause the exact
same error:
(!) NOTICE: Turbine: init() failed: java.lang.VerifyError: (class:
org/apache/log4j/LogManager, method: <clinit> signature: ()V) Incompatible
argument to function
Either there is yet another log4j jar somewhere (not likely since I get a
"NoClassDefFoundError" already), or the problem is somewhere else.
I will keep experimenting. If there are any other ideas or I'm missing
something, please, someone let me know.
-----Original Message-----
From: Scott T. Weaver [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 14, 2004 10:00 AM
To: Jetspeed Users List
Subject: Re: Running Jetspeed 1.5 on JRun4
Hi George,
Looks like a version conflict in the version of log4j included with J2
and the one JRun appears to be using. Try removing the log4j jar from
the jetspeed/WEB-INF/lib directory.
Stathis, George wrote:
A few more details:
1) Our JRun installation came with ColdFusion MX 6.1, so a bunch of
ColdFusion classes are in the classpath.
2) When starting the server that houses the Jetspeed 1.5 application,
the following JetspeedLoggingService related error appears in the JRun
Launcher
log:
Starting Apache Jetspeed Portal/1.5
(!) NOTICE: init
(!) NOTICE: ServiceBroker: LoggingService enabled.
(!) NOTICE: Turbine: init() failed: java.lang.VerifyError: (class:
org/apache/log4j/LogManager, method: <clinit> signature: ()V)
Incompatible argument to function
at
org.apache.jetspeed.services.logging.JetspeedLogFactoryService.getLogge
r(Jet
speedLogFactoryService.java:168)
at
org.apache.jetspeed.services.logging.JetspeedLoggingService.<clinit>(Jetspe
e
dLoggingService.java:59)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at
org.apache.turbine.services.BaseInitableBroker.getInitableInstance(Base
Init
a
bleBroker.java:257)rethrown as
org.apache.turbine.services.InstantiationException: Failed to
instantiate org.apache.jetspeed.services.logging.JetspeedLoggingService
at
org.apache.turbine.services.BaseInitableBroker.getInitableInstance(Base
Init
a
bleBroker.java:295)
at
org.apache.turbine.services.BaseInitableBroker.initClass(BaseInitableBr
oker
.
java:145)
at
org.apache.turbine.services.BaseServiceBroker.initService(BaseServiceBr
oker
.
java:139)
at
org.apache.turbine.services.TurbineServices.initPrimaryServices(Turbine
Serv
i
ces.java:204)
at org.apache.turbine.Turbine.init(Turbine.java:247)
at javax.servlet.GenericServlet.init(GenericServlet.java:258)
at
jrun.servlet.WebApplicationService.loadServlet(WebApplicationService.ja
va:1
2
43)
at
jrun.servlet.WebApplicationService.preloadServlets(WebApplicationServic
e.ja
v
a:790)
at
jrun.servlet.WebApplicationService.postStart(WebApplicationService.java
:297
)
at
jrun.deployment.DeployerService.initModules(DeployerService.java:711)
at
jrun.deployment.DeployerService.createWatchedDeployment(DeployerService
.jav
a
:242)
at jrun.deployment.DeployerService.deploy(DeployerService.java:430)
at
jrun.deployment.DeployerService.handleEvent(DeployerService.java:381)
at
jrunx.kernel.JRunServiceDeployer.fireEvent(JRunServiceDeployer.java:710)
at
jrunx.kernel.JRunServiceDeployer.deployServices(JRunServiceDeployer.jav
a:11
1
)
at
jrunx.kernel.DeploymentService.loadServices(DeploymentService.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja
va:3
9
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso
rImp
l
.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1628)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at jrunx.kernel.JRun.startServer(JRun.java:575)
at jrunx.kernel.JRun.<init>(JRun.java:493)
at jrunx.kernel.JRun$1.run(JRun.java:346)
at java.security.AccessController.doPrivileged(Native Method)
at jrunx.kernel.JRun.start(JRun.java:343)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja
va:3
9
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso
rImp
l
.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at jrunx.kernel.JRun.invoke(JRun.java:180)
at jrunx.kernel.JRun.main(JRun.java:168)
Server default ready (startup time: 13 seconds)
-----Original Message-----
From: Stathis, George [mailto:[EMAIL PROTECTED]
Sent: Wednesday, October 13, 2004 10:56 AM
To: '[EMAIL PROTECTED]'
Subject: Running Jetspeed 1.5 on JRun4
I haven't seem any messages specific to JRun4 problems, so I have to
ask myself. Is anyone running Jetspeed 1.5 on JRun4 (with the latest
service pack, "Update 4", installed)?
I have downloaded the Jetspeed 1.5 WAR file and have have successfully
deployed it on Tomcat 5. Deploying it on JRun4 expands the WAR file
fine, but when trying to browse to the portal's front page, I get an
HTTP 500 "The page cannot be displayed" error. Looking at the JRun
logs, I find the following error:
10/13 10:39:32 error ServiceBroker: unknown service PoolService
requested
org.apache.turbine.services.InstantiationException: ServiceBroker: unknown
service PoolService requested at
org.apache.turbine.services.BaseServiceBroker.getServiceInstance(BaseServic
e
Broker.java:354)
at
org.apache.turbine.services.BaseServiceBroker.getService(BaseServiceBro
ker.
j
ava:296)
at
org.apache.turbine.util.RunDataFactory.putRunData(RunDataFactory.java:2
26)
at org.apache.turbine.Turbine.doGet(Turbine.java:643)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at
jrun.servlet.JRunRequestDispatcher.invokeNext(JRunRequestDispatcher.java:44
9
)
at
jrun.servlet.JRunRequestDispatcher.forwardInvoke(JRunRequestDispatcher.
java
:
418)
at
jrun.servlet.JRunRequestDispatcher.forward(JRunRequestDispatcher.java:1
75)
at jrun.jsp.runtime.JRunPageContext.forward(JRunPageContext.java:349)
at jrun.jsp.tags.Forward.doit(Forward.java:14)
at jrun.jsp.tags.RequestDispatchTag.doEndTag(RequestDispatchTag.java:47)
at jrun__index2ejspa._jspService(jrun__index2ejspa.java:58)
at jrun.jsp.runtime.HttpJSPServlet.service(HttpJSPServlet.java:43)
at jrun.jsp.JSPServlet.service(JSPServlet.java:119)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at
jrun.servlet.JRunRequestDispatcher.invokeNext(JRunRequestDispatcher.java:44
9
)
at
jrun.servlet.JRunRequestDispatcher.forwardInvoke(JRunRequestDispatcher.
java
:
418)
at
jrun.servlet.JRunRequestDispatcher.forward(JRunRequestDispatcher.java:1
75)
at jrun.servlet.file.FileServlet.service(FileServlet.java:306)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:91)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at
jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:249)
at
jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:527)
at jrun.servlet.http.WebService.invokeRunnable(WebService.java:168)
at
jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:45
7
)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
I'm not sure where to get started debugging here. I'm sure it's a JRun
problem rather than a Jetspeed problem (and I will post for help on the
Macormedia forums too), but I just wanted to see if people have any
quick suggestions here.
Thank you in advance for your time.
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"Great minds discuss ideas. Average minds discuss events. Small minds discuss people."
- Admiral Hyman Rickover
*******************************************
* Scott T. Weaver *
* <[EMAIL PROTECTED]> *
* <http://www.einnovation.com> *
* -------------------------------------- *
* Apache Jetspeed Enterprise Portal *
* Apache Pluto Portlet Container *
* *
* OpenEditPro, Website Content Management *
* <http://www.openedit.org> *
*******************************************
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