[jboss-jira] [JBoss JIRA] Created: (JGRP-363) GossipRouter classpath error message is misleading

[Jerry Gauthier (JIRA)]

GossipRouter classpath error message is misleading
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                 Key: JGRP-363
                 URL: http://jira.jboss.com/jira/browse/JGRP-363
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 2.4
            Reporter: Jerry Gauthier
         Assigned To: Bela Ban
            Priority: Minor


If you start the GossipRouter without concurrent.jar on the classpath, a NoClassDefFoundError exception will occur.  However this information is hidden by GossipRouter error handing and the user is presented with the cryptic message:  "failed reading the magic number mapping file."

I think there are severl ways to improve this situation.

1)  Update the GossipRouter example in the JGroups documentation to show what jars need to be on the classpath.
2)  Modify the GossipRouter or ClassConfigurator to reveal the underlying problem.

Note that this error occurs when you start the GossipRouter per the doc without adding concurrent.jar to the classpath.

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