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From: Kevan Miller <kevan.miller@gmail.com>
To: user@geronimo.apache.org
In-Reply-To: <73a75e430806230916h49386b80v7ed739100ed2200a@mail.gmail.com>
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Subject: Re: Clusering Configuration samples errors in branches/2.1 using
 Tomcat
Date: Mon, 23 Jun 2008 14:37:36 -0400
References: <73a75e430806230916h49386b80v7ed739100ed2200a@mail.gmail.com>


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On Jun 23, 2008, at 12:16 PM, Jason Warner wrote:

> I've been messing around a little bit with clustering by following  
> the directions for clustering configuration for jetty[1] but  
> modifying the instructions to work with tomcat.  I've found that the  
> sample app linked in the example deploys succesfully on the 2.1.1  
> release but not on the latest branches/2.1. A class cast exception  
> is received when attempting to deploy the app[2].  It seems that  
> 2.1.1 uses a milestone release of 2.0 rather than the full released  
> version.  I updated 2.1.1 locally to use the full 2.0 release of  
> wadi, and that resulted in the same error I was seeing on branches/ 
> 2.1.  Anybody have any thoughts on what could cause this or how to  
> fix it?
>
> [1] http://cwiki.apache.org/GMOxDEV/clustering-configuration-for-jetty.html
>
> [2]
>
> 12:00:33,876 ERROR [BasicServiceSpaceDispatcher] See nested
> org.codehaus.wadi.group.MessageExchangeException:  
> java.lang.ClassCastException: cannot assign instance of  
> org.apache.catalina.tribes.UniqueId to field  
> org.codehaus.wadi.tribes.TribesPeer.uniqueId of type  
> org.apache.catalina.tribes.UniqueId in instance of  
> org.codehaus.wadi.tribes.TribesPeer
>     at  
> org 
> .codehaus 
> .wadi 
> .servicespace 
> .basic 
> .TransformEnvelopeInterceptor 
> .onInboundEnvelope(TransformEnvelopeInterceptor.java:46)
>     at  
> org 
> .codehaus 
> .wadi 
> .group 
> .impl.AbstractDispatcher.onInboundEnvelope(AbstractDispatcher.java: 
> 308)
>     at  
> org 
> .codehaus 
> .wadi 
> .group.impl.AbstractDispatcher.onEnvelope(AbstractDispatcher.java:92)
>     at  
> org 
> .codehaus 
> .wadi 
> .servicespace 
> .basic.ServiceSpaceEndpoint.dispatch(ServiceSpaceEndpoint.java:49)
>     at  
> org 
> .codehaus 
> .wadi 
> .group 
> .impl.ServiceEndpointWrapper.dispatch(ServiceEndpointWrapper.java:50)
>     at org.codehaus.wadi.group.impl.BasicEnvelopeDispatcherManager 
> $DispatchRunner.run(BasicEnvelopeDispatcherManager.java:121)
>     at java.util.concurrent.ThreadPoolExecutor 
> $Worker.runTask(ThreadPoolExecutor.java:650)
>     at java.util.concurrent.ThreadPoolExecutor 
> $Worker.run(ThreadPoolExecutor.java:675)
>     at java.lang.Thread.run(Thread.java:613)
> Caused by: java.lang.ClassCastException: cannot assign instance of  
> org.apache.catalina.tribes.UniqueId to field  
> org.codehaus.wadi.tribes.TribesPeer.uniqueId of type  
> org.apache.catalina.tribes.UniqueId in instance of  
> org.codehaus.wadi.tribes.TribesPeer
>     at java.io.ObjectStreamClass 
> $FieldReflector.setObjFieldValues(ObjectStreamClass.java:2004)
>     at  
> java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java: 
> 1184)
>     at  
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java: 
> 1914)
>     at  
> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
>     at  
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java: 
> 1719)
>     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java: 
> 1305)
>     at  
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java: 
> 1908)
>     at  
> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
>     at  
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java: 
> 1719)
>     at java.io.ObjectInputStream.readObject0(ObjectInputStream.java: 
> 1305)
>     at java.io.ObjectInputStream.readObject(ObjectInputStream.java: 
> 348)
>     at  
> org 
> .codehaus 
> .wadi 
> .servicespace 
> .basic 
> .BasicServiceSpaceEnvelopeHelper 
> .transformInboundEnvelope(BasicServiceSpaceEnvelopeHelper.java:123)
>     at  
> org 
> .codehaus 
> .wadi 
> .servicespace 
> .basic 
> .TransformEnvelopeInterceptor 
> .onInboundEnvelope(TransformEnvelopeInterceptor.java:44)
>     ... 8 more

Hi Jason,
Is the example working with Jetty? Or is it just 2.1.2-SNAPSHOT with  
Tomcat that is broken?

I see there were changes to http://svn.codehaus.org/wadi/tags/2.0/wadi-core/src/main/java/org/codehaus/wadi/servicespace/basic/ 
  between 2.0-M10 and 2.0. Seems to be a Classloader problem related  
to Wadi 2.0. Suggest you use a debugger to inspect the Classloader  
being used to deserialize the UniqueId object. We seem to be loading  
UniqueId classes from two different Classloaders -- thus the  
ClassCastException. Once we figure out the two Classloaders being  
used, can start to sort out the inconsitencies...

--kevan 
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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; "><br><div><div>On Jun 23, 2008, =
at 12:16 PM, Jason Warner wrote:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite">I've been =
messing around a little bit with clustering by following the directions =
for clustering configuration for jetty[1] but modifying the instructions =
to work with tomcat.&nbsp; I've found that the sample app linked in the =
example deploys succesfully on the 2.1.1 release but not on the latest =
branches/2.1. A class cast exception is received when attempting to =
deploy the app[2].&nbsp; It seems that 2.1.1 uses a milestone release of =
2.0 rather than the full released version.&nbsp; I updated 2.1.1 locally =
to use the full 2.0 release of wadi, and that resulted in the same error =
I was seeing on branches/2.1.&nbsp; Anybody have any thoughts on what =
could cause this or how to fix it?&nbsp; <br> <br>[1] <a =
href=3D"http://cwiki.apache.org/GMOxDEV/clustering-configuration-for-jetty=
.html">http://cwiki.apache.org/GMOxDEV/clustering-configuration-for-jetty.=
html</a><br><br>[2] <br><br>12:00:33,876 ERROR =
[BasicServiceSpaceDispatcher] See nested<br> =
org.codehaus.wadi.group.MessageExchangeException: =
java.lang.ClassCastException: cannot assign instance of =
org.apache.catalina.tribes.UniqueId to field =
org.codehaus.wadi.tribes.TribesPeer.uniqueId of type =
org.apache.catalina.tribes.UniqueId in instance of =
org.codehaus.wadi.tribes.TribesPeer<br> &nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.servicespace.basic.TransformEnvelopeInterceptor.onInboun=
dEnvelope(TransformEnvelopeInterceptor.java:46)<br>&nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.group.impl.AbstractDispatcher.onInboundEnvelope(Abstract=
Dispatcher.java:308)<br> &nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.group.impl.AbstractDispatcher.onEnvelope(AbstractDispatc=
her.java:92)<br>&nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.servicespace.basic.ServiceSpaceEndpoint.dispatch(Service=
SpaceEndpoint.java:49)<br>&nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.group.impl.ServiceEndpointWrapper.dispatch(ServiceEndpoi=
ntWrapper.java:50)<br> &nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.group.impl.BasicEnvelopeDispatcherManager$DispatchRunner=
.run(BasicEnvelopeDispatcherManager.java:121)<br>&nbsp;&nbsp;&nbsp; at =
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.=
java:650)<br> &nbsp;&nbsp;&nbsp; at =
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java=
:675)<br>&nbsp;&nbsp;&nbsp; at =
java.lang.Thread.run(Thread.java:613)<br>Caused by: =
java.lang.ClassCastException: cannot assign instance of =
org.apache.catalina.tribes.UniqueId to field =
org.codehaus.wadi.tribes.TribesPeer.uniqueId of type =
org.apache.catalina.tribes.UniqueId in instance of =
org.codehaus.wadi.tribes.TribesPeer<br> &nbsp;&nbsp;&nbsp; at =
java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamCla=
ss.java:2004)<br>&nbsp;&nbsp;&nbsp; at =
java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1184)<b=
r>&nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1914)<b=
r> &nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)<br>&=
nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)<=
br>&nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)<br> =
&nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)<b=
r>&nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)<br>&=
nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)<=
br> &nbsp;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)<br>&nbs=
p;&nbsp;&nbsp; at =
java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)<br>&nbsp;=
&nbsp;&nbsp; at =
org.codehaus.wadi.servicespace.basic.BasicServiceSpaceEnvelopeHelper.trans=
formInboundEnvelope(BasicServiceSpaceEnvelopeHelper.java:123)<br> =
&nbsp;&nbsp;&nbsp; at =
org.codehaus.wadi.servicespace.basic.TransformEnvelopeInterceptor.onInboun=
dEnvelope(TransformEnvelopeInterceptor.java:44)<br>&nbsp;&nbsp;&nbsp; =
... 8 more<br></blockquote></div><br><div>Hi Jason,</div><div>Is the =
example working with Jetty? Or is it just 2.1.2-SNAPSHOT with Tomcat =
that is broken?</div><div><br></div><div>I see there were changes =
to&nbsp;<a =
href=3D"http://svn.codehaus.org/wadi/tags/2.0/wadi-core/src/main/java/org/=
codehaus/wadi/servicespace/basic/">http://svn.codehaus.org/wadi/tags/2.0/w=
adi-core/src/main/java/org/codehaus/wadi/servicespace/basic/</a> between =
2.0-M10 and 2.0. Seems to be a Classloader problem related to Wadi 2.0. =
Suggest you use a debugger to inspect the Classloader being used to =
deserialize the UniqueId object. We seem to be loading UniqueId classes =
from two different Classloaders -- thus the ClassCastException. Once we =
figure out the two Classloaders being used, can start to sort out the =
inconsitencies...</div><div><br></div><div>--kevan&nbsp;</div></body></htm=
l>=

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