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Re: [eclipselink-users] Cache Coordination in Glassfish
|
Mitesh, or anyone?
any new on this? This ClassNotFoundException quite bugs me!
rv
Mitesh,
See below for the full stack trace. Strangely enough, this one's
from the receiving side, so the sending instance must have been
able to serialize the enum -- which it isn't always. There's a
second exception that shows up on the sending side. One of those
two is always there.
About the structure of the file I'm deploying:
It's a fairly large ear, containing around 15 jars with our EJBs,
some wars, and a lot of dependencies. 6 of the ejb jars contain
entity beans and are referenced in persistence.xml, which resides
in its own jar (that does not contain any beans itself).
The interface in question, IDocumentList, is in archive.jar, which
contains also the DocumentList entity bean that causes the
exceptions when changed. DocumentList does not implement
IDocumentList but uses the enum ListType defined there.
All of the jars in the ear, including pu.jar (containing
persistence.xml) and archive.jar (containing the entity, the
interface and the enum) are in the ear's root. The only directory
in the ear is META-INF with application.xml in it.
Is there a better place for any of the jars than the ear's root?
Thanks for your assistance!
rv
---
Here are the stack traces:
Receiving node:
[#|2008-12-11T20:01:44.854+0100|WARNING|sun-appserver9.1|
org.eclipse.persistence.session.file:/usr/local/server/glassfish/
nodeagents/tas2-agent/tas2-reaktor-test-instance/applications/j2ee-
apps/com.bookpac.server/pu.jar-ormpersistence|
_ThreadID=38;_ThreadName=RMI TCP Connection
(26706)-192.168.23.21;_RequestID=c713f335-a272-41ba-b2bc-
e7a139940a30;|MergeChangeSetCommand command failed due to: Local
Exception Stack:
Exception [EclipseLink-12002] (Eclipse Persistence Services - 1.0.2
(Build 20081024)):
org.eclipse.persistence.exceptions.CommunicationException
Exception Description: Unable to propagate changes to Service
[BookpacCacheCoordination, 8f4d39c0-d1bb-4530-8c54-a5b3542d68ff,
rmi://192.168.23.21:38686].
Internal Exception: java.lang.ClassNotFoundException:
com.bookpac.archive.core.IDocumentList$ListType
at
org.eclipse.persistence.exceptions.CommunicationException.unableToProp
agateChanges(CommunicationException.java:68)
at
org.eclipse.persistence.sessions.coordination.MergeChangeSetCommand.ge
tChangeSet(MergeChangeSetCommand.java:47)
at
org.eclipse.persistence.sessions.coordination.MergeChangeSetCommand.ex
ecuteWithSession(MergeChangeSetCommand.java:82)
at
org.eclipse.persistence.internal.sessions.AbstractSession.processComma
nd(AbstractSession.java:3174)
at
org.eclipse.persistence.sessions.coordination.RemoteCommandManager.pro
cessCommandFromRemoteConnection(RemoteCommandManager.java:256)
at
org.eclipse.persistence.internal.sessions.coordination.rmi.RMIRemoteCo
mmandConnectionImpl.executeCommand
(RMIRemoteCommandConnectionImpl.java:52)
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:597)
at sun.rmi.server.UnicastServerRef.dispatch
(UnicastServerRef.java:305)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages
(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0
(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run
(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask
(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run
(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException:
com.bookpac.archive.core.IDocumentList$ListType
at com.sun.appserv.server.util.ASURLClassLoader.loadClass
(ASURLClassLoader.java:129)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:
319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at java.io.ObjectInputStream.resolveClass
(ObjectInputStream.java:604)
at java.io.ObjectInputStream.readNonProxyDesc
(ObjectInputStream.java:1575)
at java.io.ObjectInputStream.readClassDesc
(ObjectInputStream.java:1496)
at java.io.ObjectInputStream.readEnum
(ObjectInputStream.java:1686)
at java.io.ObjectInputStream.readObject0
(ObjectInputStream.java:1326)
at java.io.ObjectInputStream.defaultReadFields
(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData
(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject
(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0
(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readArray
(ObjectInputStream.java:1667)
at java.io.ObjectInputStream.readObject0
(ObjectInputStream.java:1323)
at java.io.ObjectInputStream.defaultReadFields
(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData
(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject
(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0
(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject
(ObjectInputStream.java:351)
at
org.eclipse.persistence.internal.sessions.ObjectChangeSet.readComplete
ChangeSet(ObjectChangeSet.java:623)
at
org.eclipse.persistence.internal.sessions.ObjectChangeSet.readObject
(ObjectChangeSet.java:660)
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:597)
at java.io.ObjectStreamClass.invokeReadObject
(ObjectStreamClass.java:974)
at java.io.ObjectInputStream.readSerialData
(ObjectInputStream.java:1849)
at java.io.ObjectInputStream.readOrdinaryObject
(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0
(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject
(ObjectInputStream.java:351)
at java.util.IdentityHashMap.readObject
(IdentityHashMap.java:1188)
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:597)
at java.io.ObjectStreamClass.invokeReadObject
(ObjectStreamClass.java:974)
at java.io.ObjectInputStream.readSerialData
(ObjectInputStream.java:1849)
at java.io.ObjectInputStream.readOrdinaryObject
(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0
(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject
(ObjectInputStream.java:351)
at
org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet.<init>
(UnitOfWorkChangeSet.java:69)
at
org.eclipse.persistence.sessions.coordination.MergeChangeSetCommand.ge
tChangeSet(MergeChangeSetCommand.java:43)
... 18 more
|#]
Sending node:
[#|2008-12-12T11:08:46.336+0100|WARNING|sun-appserver9.1|
javax.enterprise.system.stream.err|
_ThreadID=41;_ThreadName=Thread-3492;_RequestID=e164d985-5d89-448a-988
5-a6d3b4487598;|Local Exception Stack:
Exception [EclipseLink-22105] (Eclipse Persistence Services - 1.0.2
(Build 20081024)):
org.eclipse.persistence.exceptions.RemoteCommandManagerException
Exception Description: Could not propagate command to
RemoteConnection[Service[BookpacCacheCoordination,
67bbd4d4-0a0d-47dd-8db8-90d2dac8ac76, rmi://192.168.23.22:38686]]
Internal Exception: java.lang.Exception: Exception
[EclipseLink-12002] (Eclipse Persistence Services - 1.0.2 (Build
20081024)): org.eclipse.persistence.exceptions.CommunicationException
Exception Description: Unable to propagate changes to Service
[BookpacCacheCoordination, 8f4d39c0-d1bb-4530-8c54-a5b3542d68ff,
rmi://192.168.23.21:38686].
Internal Exception: java.lang.ClassNotFoundException:
com.bookpac.archive.core.IDocumentList$ListType
at
org.eclipse.persistence.exceptions.RemoteCommandManagerException.unabl
eToPropagateCommand(RemoteCommandManagerException.java:119)
at
org.eclipse.persistence.internal.sessions.coordination.CommandPropagat
or.handleExceptionFromRemoteExecution(CommandPropagator.java:133)
at
org.eclipse.persistence.internal.sessions.coordination.CommandPropagat
or.propagateCommand(CommandPropagator.java:113)
at
org.eclipse.persistence.internal.sessions.coordination.CommandPropagat
or.run(CommandPropagator.java:187)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.Exception: Exception [EclipseLink-12002]
(Eclipse Persistence Services - 1.0.2 (Build 20081024)):
org.eclipse.persistence.exceptions.CommunicationException
Exception Description: Unable to propagate changes to Service
[BookpacCacheCoordination, 8f4d39c0-d1bb-4530-8c54-a5b3542d68ff,
rmi://192.168.23.21:38686].
Internal Exception: java.lang.ClassNotFoundException:
com.bookpac.archive.core.IDocumentList$ListType
... 4 more
|#]
Am 11.12.2008 um 21:08 schrieb Mitesh Meswani:
Can you please describe the structure of archive that you deploy
in more details. Specially how is the jar that contains entities
and the enum placed? Also can you please post full exception stack
trace for the exceptions below.
Thanks,
Mitesh
wintermute@xxxxxxxxxxxxxxxxxx wrote:
Hi list,
it's been quite a while -- some of you may remember I was trying
to get EclipseLink cache coordination to work in Glassfish.
The good news is: When I got back to this, I did it. I'll attach
the piece of code that does the trick.
The bad news: There's one more issue.
Most of my changes propagate to the cluster, but as soon as a
particular entity is involved, I see exceptions in the log. The
only thing special about the entity is that it uses an enum
constant defined in an Interface elswhere, but certainly in the
reach of the application classloader. Here's the exception:
MergeChangeSetCommand command failed due to: Local Exception Stack:
Exception [EclipseLink-12002] (Eclipse Persistence Services -
1.0.2 (Build 20081024)):
org.eclipse.persistence.exceptions.CommunicationException
Exception Description: Unable to propagate changes to Service
[BookpacCacheCoordination, 8f4d39c0-d1bb-4530-8c54-a5b3542d68ff,
rmi://192.168.23.21:38686].
Internal Exception: java.lang.ClassNotFoundException:
com.bookpac.archive.core.IDocumentList$ListType
at
org.eclipse.persistence.exceptions.CommunicationException.unableToPr
opagateChanges(CommunicationException.java:68)
at
org.eclipse.persistence.sessions.coordination.MergeChangeSetCommand.
getChangeSet(MergeChangeSetCommand.java:47)
[...]
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException:
com.bookpac.archive.core.IDocumentList$ListType
at com.sun.appserv.server.util.ASURLClassLoader.loadClass
(ASURLClassLoader.java:129)
[...]
ListType is an enum, defined in IDocumentList. It's there, and
the class is in a jar known to persistence.xml, in fact, in the
same jar as the other entities that do get propagated.
Is there a general problem with enums? Or do they need to be
defined in the JPA entity that uses them?
Maybe someone knows something about this Classloading thing with
Enums?
Thanks in advance,
rv
----
This is the code I'm using:
public void customize(Session session) throws Exception {
RemoteCommandManager rcm = new
RemoteCommandManager((CommandProcessor)session);
rcm.getDiscoveryManager().setMulticastGroupAddress
("226.1.2.3"); //$NON-NLS-1$
rcm.getDiscoveryManager().setMulticastPort(3122);
rcm.getDiscoveryManager().setAnnouncementDelay(1000*5);
rcm.setChannel("CacheCoordination"); //$NON-NLS-1$
rcm.setShouldPropagateAsynchronously(true);
rcm.getTransportManager().setNamingServiceType
(TransportManager.REGISTRY_NAMING_SERVICE);
rcm.getTransportManager().setUserName("admin"); //$NON-
NLS-1$
rcm.getTransportManager().setPassword("adminadmin"); //
$NON-NLS-1$
rcm.setUrl("rmi://$HOST:38686"); //$NON-NLS-1$
rcm.setServerPlatform(session.getServerPlatform());
((DatabaseSession)session).setCommandManager(rcm);
((DatabaseSession)session).setShouldPropagateChanges(true);
rcm.initialize();
}
This is the customize Method of an EclipseLink session
customizer, obviously.
The important bit is the rcm.setUrl(...) line -- 38686 is the
port you want to be using for RMI in Glassfish clusters.
One thing that hat confused me was the announcement delay: I
thougt announcement would be done periodically, but it's not.
Nodes announce excactly once by default, when they start up. So
there's a chance of nodes missing each other if one of them is
starting up slowly and doesn't hear the other's announcements.
The announcement delay should be larger than the maximum
difference between startup times of the nodes -- unfortunately,
there's no way of knowing this. To make sure I don't end up with
a slow node that doesn't have its cache updated without me
noticing in production, I added some more announcements.
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