[ mx4j-Bugs-919599 ] JMXServerErrorException thrown during setAttribute invoc.

"SourceForge.net" <[email protected]>
Newsgroups gmane.comp.java.mx4j.devel
Message-ID <[email protected]> 
Bugs item #919599, was opened at 2004-03-19 17:00
Message generated for change (Comment added) made by biorn_steedom
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=450647&aid=919599&group_id=47745

Category: JSR 160 Implementation
Group: Release 2.0.0
>Status: Closed
>Resolution: Fixed
Priority: 9
Submitted By: Jason Brome (jasonbrome)
Assigned to: Simone Bordet (biorn_steedom)
Summary: JMXServerErrorException thrown during setAttribute invoc.

Initial Comment:
As discussed in the mx4j users mailing list.  I have 
created a simple test case, based upon the simple 
remoting example that ships with mx4j v2.0.

Start the Server, then start the Client.  The client 
contains a for loop that will repeated invoke setAttribute 
to set a value within the HelloWorld mbean.  After a 
certain number of iterations (and the number of 
iterations varies - possibly indicating some form of race 
condition / threading issue), the JMX Server throws an 
Exception, the root cause of which is:

java.lang.NoClassDefFoundError: 
sun/reflect/MethodAccessorImpl

I have attached the test case to this email.  The full 
stack trace is included below.  The same test case 
completes successfully with mx4j v2.0 beta 1.

I have run the test case on both Windows 2000 
(j2sdk1.4.2_04) and Windows XP (j2sdk1.4.1_02).

javax.management.remote.JMXServerErrorException: 
Error thrown during invocation
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.chain
(RMIConnectionSubjectInvoker.java:103)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.access$00
0(RMIConnectionSubjectInvoker.java:32)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker$1.run
(RMIConnectionSubjectInvoker.java:89)
	at java.security.AccessController.doPrivileged
(Native Method)
	at mx4j.remote.MX4JRemoteUtils.subjectInvoke
(MX4JRemoteUtils.java:135)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.subjectInv
oke(RMIConnectionSubjectInvoker.java:85)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.invoke
(RMIConnectionSubjectInvoker.java:79)
	at $Proxy0.setAttribute(Unknown Source)
	at 
javax.management.remote.rmi.RMIConnectionImpl.setAttri
bute(RMIConnectionImpl.java:207)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke
(Method.java:324)
	at sun.rmi.server.UnicastServerRef.dispatch
(UnicastServerRef.java:261)
	at sun.rmi.transport.Transport$1.run
(Transport.java:148)
	at java.security.AccessController.doPrivileged
(Native Method)
	at sun.rmi.transport.Transport.serviceCall
(Transport.java:144)
	at 
sun.rmi.transport.tcp.TCPTransport.handleMessages
(TCPTransport.java:460)
	at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.ru
n(TCPTransport.java:701)
	at java.lang.Thread.run(Thread.java:534)
	at 
sun.rmi.transport.StreamRemoteCall.exceptionReceivedFr
omServer(StreamRemoteCall.java:247)
	at 
sun.rmi.transport.StreamRemoteCall.executeCall
(StreamRemoteCall.java:223)
	at sun.rmi.server.UnicastRef.invoke
(UnicastRef.java:133)
	at 
javax.management.remote.rmi.RMIConnectionImpl_Stub.s
etAttribute(Unknown Source)
	at mx4j.remote.rmi.ClientInvoker.setAttribute
(ClientInvoker.java:190)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke
(Method.java:324)
	at mx4j.remote.ClientProxy.invoke
(ClientProxy.java:34)
	at mx4j.remote.rmi.ClientUnmarshaller.chain
(ClientUnmarshaller.java:67)
	at mx4j.remote.rmi.ClientUnmarshaller.invoke
(ClientUnmarshaller.java:56)
	at $Proxy0.setAttribute(Unknown Source)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke
(Method.java:324)
	at mx4j.remote.ClientProxy.invoke
(ClientProxy.java:34)
	at 
mx4j.remote.rmi.ClientExceptionCatcher.invoke
(ClientExceptionCatcher.java:42)
	at $Proxy0.setAttribute(Unknown Source)
	at mx4jtest.Client.main(Client.java:64)
Caused by: java.lang.NoClassDefFoundError: 
sun/reflect/MethodAccessorImpl
	at sun.misc.Unsafe.defineClass(Native Method)
	at sun.reflect.ClassDefiner.defineClass
(ClassDefiner.java:45)
	at sun.reflect.MethodAccessorGenerator$1.run
(MethodAccessorGenerator.java:381)
	at java.security.AccessController.doPrivileged
(Native Method)
	at 
sun.reflect.MethodAccessorGenerator.generate
(MethodAccessorGenerator.java:377)
	at 
sun.reflect.MethodAccessorGenerator.generateMethod
(MethodAccessorGenerator.java:59)
	at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:28)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke
(Method.java:324)
	at mx4j.remote.rmi.RMIMarshaller.unmarshal
(RMIMarshaller.java:169)
	at mx4j.remote.rmi.RMIMarshaller.unmarshal
(RMIMarshaller.java:148)
	at mx4j.remote.rmi.RMIMarshaller.unmarshal
(RMIMarshaller.java:137)
	at 
mx4j.remote.rmi.RMIConnectionInvoker.setAttribute
(RMIConnectionInvoker.java:202)
	at 
sun.reflect.GeneratedMethodAccessor1.invoke(Unknown 
Source)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke
(Method.java:324)
	at mx4j.remote.rmi.RMIConnectionProxy.invoke
(RMIConnectionProxy.java:36)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.chain
(RMIConnectionSubjectInvoker.java:98)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.access$00
0(RMIConnectionSubjectInvoker.java:32)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker$1.run
(RMIConnectionSubjectInvoker.java:89)
	at java.security.AccessController.doPrivileged
(Native Method)
	at mx4j.remote.MX4JRemoteUtils.subjectInvoke
(MX4JRemoteUtils.java:135)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.subjectInv
oke(RMIConnectionSubjectInvoker.java:85)
	at 
mx4j.remote.rmi.RMIConnectionSubjectInvoker.invoke
(RMIConnectionSubjectInvoker.java:79)
	at $Proxy0.setAttribute(Unknown Source)
	at 
javax.management.remote.rmi.RMIConnectionImpl.setAttri
bute(RMIConnectionImpl.java:207)
	at 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
	at 
sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke
(Method.java:324)
	at sun.rmi.server.UnicastServerRef.dispatch
(UnicastServerRef.java:261)
	at sun.rmi.transport.Transport$1.run
(Transport.java:148)
	at java.security.AccessController.doPrivileged
(Native Method)
	at sun.rmi.transport.Transport.serviceCall
(Transport.java:144)
	at 
sun.rmi.transport.tcp.TCPTransport.handleMessages
(TCPTransport.java:460)
	at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.ru
n(TCPTransport.java:701)
	at java.lang.Thread.run(Thread.java:534)
Exception in thread "main" 

----------------------------------------------------------------------

>Comment By: Simone Bordet (biorn_steedom)
Date: 2004-03-19 18:37

Message:
Logged In: YES 
user_id=128193

A change in the classloading for the RMI marshaller lead to
this problem. I have committed a fix in CVS, and we will
release 2.0.1 in few days.
Thanks !

----------------------------------------------------------------------

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