3:23 p.m.
Stefan Guilhen [http://community.jboss.org/people/sguilhen] created the discussion
"Re: IIOP Subsystem Issues"
To view the discussion, visit: http://community.jboss.org/message/604815#604815
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I've tried what my previous post suggested and the issue is gone. So now I have a
small project that compiles the javax.rmi and javax.rmi.CORBA packages using JacORB's
org.omg API. The question now is where should this new project reside? Along with the
other "spec" projects?
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7:06 p.m.
David Lloyd [http://community.jboss.org/people/dmlloyd] created the discussion
"Re: IIOP Subsystem Issues"
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Yes. Create a spec subproject for it. Make sure you coordinate with Shelly though;
it's her project.
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2:53 p.m.
Stefan Guilhen [http://community.jboss.org/people/sguilhen] created the discussion
"Re: IIOP Subsystem Issues"
To view the discussion, visit: http://community.jboss.org/message/606146#606146
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After rebasing my branch to fix the compilation error seen by David, I've run into a
snagging issue: half of the time the AS starts fine, half of the time I get the following
error:
16:40:20,613 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC00001: Failed
to start service jboss.iiop.naming-service: org.jboss.msc.service.StartException in
service jboss.iiop.naming-service: Failed to start service
at
org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1696)
[jboss-msc-1.0.0.Beta8.jar:1.0.0.Beta8]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[:1.6.0_24]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[:1.6.0_24]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_24]
Caused by: java.lang.ExceptionInInitializerError
at org.jacorb.orb.Delegate.getReference(Unknown Source)
at org.jacorb.orb.ORB.getReference(Unknown Source)
at org.jacorb.poa.POA.getReference(Unknown Source)
at org.jacorb.poa.POA.create_reference_with_id(Unknown Source)
at org.jboss.as.iiop.service.CorbaNamingService.start(CorbaNamingService.java:77)
at
org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1675)
[jboss-msc-1.0.0.Beta8.jar:1.0.0.Beta8]
... 3 more
Caused by: org.omg.CORBA.INITIALIZE: Cannot instantiate
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl
at javax.rmi.CORBA.Stub.createDelegateIfSpecified(Stub.java:221) [:1.6.0_24]
at javax.rmi.CORBA.Stub.<clinit>(Stub.java:61) [:1.6.0_24]
... 9 more
Caused by: java.lang.ClassNotFoundException:
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl from [Module
"org.jboss.as.standalone:main" from local module loader @48d19bc8 (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)]
(no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:375) [:1.6.0_24]
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165) [:1.6.0_24]
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620) [:1.6.0_24]
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:202) [:1.6.0_24]
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:135) [:1.6.0_24]
at javax.rmi.CORBA.Stub.loadDelegateClass(Stub.java:242) [:1.6.0_24]
at javax.rmi.CORBA.Stub.createDelegateIfSpecified(Stub.java:219) [:1.6.0_24]
... 10 more
When it fails, the javax.rmi.CORBA.Stub is coming from the JDK instead of the
javax.rmi.api module. Also, we can see that the org.jboss.as.standalone module is
attempting to load the delegate, even though this code run from within the
org.jboss.as.iiop module.
As I said before, this is not consistent, sometimes I get the error, sometimes the server
starts correctly. This wasn't happening before today's rebase, so I'm guessing
something changed in the modules project. Any ideas?
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8:08 p.m.
Stefan Guilhen [http://community.jboss.org/people/sguilhen] created the discussion
"Re: IIOP Subsystem Issues"
To view the discussion, visit: http://community.jboss.org/message/606179#606179
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I've enabled the TRACE debug level for org.jboss.modules and here's what I've
found out so far:
- When the startup succeeds, the javax.rmi.CORBA.Stub is loaded and defined from the
javax.rmi.api module. Then the server attempts to load the
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl class from the same module. It
shows that this class can't be loaded from this module but the server goes on and
starts correctly. No other entries involving this class are found:
18:30:17,470 TRACE [org.jboss.modules] (MSC service thread 1-14) Finding class
javax.rmi.CORBA.Stub from Module "org.jacorb:main" from local module loader
@6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:30:17,470 TRACE [org.jboss.modules] (MSC service thread 1-14) Finding local class
javax.rmi.CORBA.Stub from Module "javax.rmi.api:main" from local module loader
@6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:30:17,470 TRACE [org.jboss.modules] (MSC service thread 1-14) Loading class
javax.rmi.CORBA.Stub locally from Module "javax.rmi.api:main" from local module
loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:30:17,471 TRACE [org.jboss.modules] (MSC service thread 1-14) Attempting to define
class javax.rmi.CORBA.Stub in Module "javax.rmi.api:main" from local module
loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
...
18:30:17,472 TRACE [org.jboss.modules] (MSC service thread 1-14) Defined class
javax.rmi.CORBA.Stub in Module "javax.rmi.api:main" from local module loader
@6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
...
18:30:17,485 TRACE [org.jboss.modules] (MSC service thread 1-14) Finding class
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl from Module
"javax.rmi.api:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:30:17,485 TRACE [org.jboss.modules] (MSC service thread 1-14) Class
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl not found from Module
"javax.rmi.api:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
- When the startup fails, javax.rmi.CORBA.Stub is loaded just like shown before, but when
the server attempts to load the StubDelegateImpl, two modules are involved: javax.rmi.api
and org.jboss.as.standalone. After that, the logs show that org.jboss.as.standalone
attempts to load javax.rmi.CORBA.Stub, which ultimately loads the JDK version of the class
we see in the exception.
18:25:04,039 TRACE [org.jboss.modules] (MSC service thread 1-1) Finding class
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl from Module
"javax.rmi.api:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:25:04,039 TRACE [org.jboss.modules] (MSC service thread 1-1) Class
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl not found from Module
"javax.rmi.api:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:25:04,040 TRACE [org.jboss.modules] (MSC service thread 1-1) Finding class
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl from Module
"org.jboss.as.standalone:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:25:04,040 TRACE [org.jboss.modules] (MSC service thread 1-1) Class
com.sun.corba.se.impl.javax.rmi.CORBA.StubDelegateImpl not found from Module
"org.jboss.as.standalone:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
...
18:25:04,043 TRACE [org.jboss.modules] (MSC service thread 1-1) Finding class
javax.rmi.CORBA.Stub from Module "org.jboss.as.standalone:main" from local
module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:25:04,043 TRACE [org.jboss.modules] (MSC service thread 1-1) Class javax.rmi.CORBA.Stub
not found from Module "org.jboss.as.standalone:main" from local module loader
@6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
In this case, the org.jboss.as.standalone module attempts to load the class right after
the javax.rmi.api module fails to do so and this messes up everything. I even found the
following entry:
18:25:04,046 TRACE [org.jboss.modules] (MSC service thread 1-1) Finding class
org.jboss.as.iiop.service.CorbaNamingService from Module
"org.jboss.as.standalone:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
18:25:04,046 TRACE [org.jboss.modules] (MSC service thread 1-1) Class
org.jboss.as.iiop.service.CorbaNamingService not found from Module
"org.jboss.as.standalone:main" from local module loader @6b86768e (roots:
/home/sguilhen/Workspace/workspace-jboss/jboss-as/build/target/jboss-7.0.0.Beta4-SNAPSHOT/modules)
For some reason, org.jboss.as.standalone is attempting to load the CorbaNamingService
class which should be visible to the org.jboss.as.iiop module only.
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10:51 p.m.
Jason Greene [http://community.jboss.org/people/jason.greene] created the discussion
"Re: IIOP Subsystem Issues"
To view the discussion, visit: http://community.jboss.org/message/606184#606184
--------------------------------------------------------------
So the problem is indeed TCCL usage from the Stub fork, along with a reference to a
com.sun class:
http://anonsvn.jboss.org/repos/jbossas/projects/specs/trunk/jboss-rmi-api...
http://anonsvn.jboss.org/repos/jbossas/projects/specs/trunk/jboss-rmi-api...
The reason it works occasionally is that when TCCL is null Class.forName falls back to the
JDK which can load the sun class. When it is not null it tries to load it from the leaked
TCCL which according to your log is the server module which doesnt cotain the class.
So it seems like we just need to port that stub base clase.
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8:11 a.m.
Stefan Guilhen [http://community.jboss.org/people/sguilhen] created the discussion
"Re: IIOP Subsystem Issues"
To view the discussion, visit: http://community.jboss.org/message/606262#606262
--------------------------------------------------------------
Jason, I fixed that locally yesterday and I still get the random error. I'll double
check I have used the fixed version.
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8:26 a.m.
Stefan Guilhen [http://community.jboss.org/people/sguilhen] created the discussion
"Re: IIOP Subsystem Issues"
To view the discussion, visit: http://community.jboss.org/message/606264#606264
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Yeah, I've enable a logger for the Stub class and it shows your description when TCCL
is used. However, I've changed the code locally to ClassLoader loader =
Stub.class.getClassLoader(); and the logs always shows
ModuleClassLoader for Module "javax.rmi.api:main"
but the random error still persists.
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Stefan Guilhen