[jboss-dev] JGroup Oddness.. GMS?

[Brian Stansberry]

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On 12/14/2009 03:24 PM, Ales Justin wrote:
> Try the forums, user forums in particular.
> * http://community.jboss.org/
>
> mike cann wrote:
>> Hi List,
>>
>> Only just joined, im not sure if this is the right place to post or not
>> so let me know if it isnt.
>>
>> Im trying to use JGroups in a project.
>>
>> First things first tried running a very simple example but couldnt get
>> the two machines to talk to each other, i read all the documentation but
>> still couldnt work out why.
>>
>> I tried using the webstart demo of the draw (found here
>> http://www.jgroups.org/demos.html) thats actually the replicatedcache
>> demo and to my surprise it worked.
>>
>> I downloaded the .jar that the jnlp uses and ran it from the command
>> line and got:
>>
>>
>> ---------------------------------------------------------
>> GMS: address is 192.168.1.69:54939<http://192.168.1.69:54939>
>> (cluster=replcache-cluster)
>> ---------------------------------------------------------
>>
>>
>>
>> Now when I tried to run the ReplCacheDemo from within the
>> jgroups-all.jar I get the following:
>>
>>
>>
>> java -cp jgroups-all.jar org.jgroups.demos.ReplCacheDemo
>>
>> 14-Dec-2009 20:17:24 org.jgroups.logging.JDKLogImpl info
>> INFO: JGroups version: 2.8.0.CR7
>>
>> -------------------------------------------------------------------
>> GMS: address=M-Win7-38823, cluster=replcache-cluster, physical
>> address=fe80:0:0:
>> 0:69e5:8edf:3e90:e817:62330
>> -------------------------------------------------------------------
>>
>>
>> So im not sure whats going on here, it looks like the jnlp demo is using
>> a different GMS (?) settings to the one in jgroups-all.jar, so I tried
>> to take the udp.xml file from the jnlp jar and use it in a simple
>> example and I get the follwing errors:
>>
>>
>>
>> 14-Dec-2009 21:12:12 org.jgroups.logging.JDKLogImpl info
>> INFO: JGroups version: 2.8.0.CR7
>> Exception in thread "main" org.jgroups.ChannelException: unable to setup
>> the protocol stack
>>          at org.jgroups.JChannel.init(JChannel.java:1706)
>>          at org.jgroups.JChannel.<init>(JChannel.java:243)
>>          at org.jgroups.JChannel.<init>(JChannel.java:226)
>>          at jgroupssimple.Main.main(Main.java:25)
>> Caused by: java.lang.Exception: unable to load class for protocol
>> (either as an absolute -  - or relative - org.jgroups.protocols. -
>> package name)!
>>          at
>> org.jgroups.stack.Configurator$ProtocolConfiguration.createLayer(Configurator.java:1244)
>>          at
>> org.jgroups.stack.Configurator$ProtocolConfiguration.access$000(Configurator.java:1135)
>>          at
>> org.jgroups.stack.Configurator.createProtocols(Configurator.java:368)
>>          at
>> org.jgroups.stack.Configurator.setupProtocolStack(Configurator.java:88)
>>          at
>> org.jgroups.stack.Configurator.setupProtocolStack(Configurator.java:54)
>>          at org.jgroups.stack.ProtocolStack.setup(ProtocolStack.java:452)
>>          at org.jgroups.JChannel.init(JChannel.java:1702)
>>          ... 3 more
>> Java Result: 1
>> BUILD SUCCESSFUL (total time: 0 seconds)
>>
>>
>>
>> Anyone any clues as to whats going on here?
>> Cheers for your time :)
>> Mike
>>
>>
>>
>>
>>
>> --
>> Mike Cann
>> http://www.mikecann.co.uk/
>> http://www.artificialgames.co.uk/
>>
>>
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>>
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-- 
Brian Stansberry
Lead, AS Clustering
JBoss by Red Hat