[jboss-dev-forums] [Design of EJB 3.0] - Re: Unique JNDI Names

[jaikiran]

"ALRubinger" wrote : 
  | Have we been wrong in this all along?  Looks like non-unique EJB names are legal so long as they're in different JARs.
  | 
  | 

Yeah, although i did start a discussion about this a few months back in our user forum, i never pushed it to a logical end http://www.jboss.org/index.html?module=bb&op=viewtopic&t=143237

"ALRubinger" wrote : 
  | @see https://jira.jboss.org/jira/browse/JBPAPP-2124
  | 
That exception shows:anonymous wrote : 
  | 
  | 16:22:33,539 WARN [AbstractDeploymentContext] Unable to register deployment mbean refspath.ear-EJB-metrics-instance
  | javax.management.InstanceAlreadyExistsException: jboss.deployment:id="refspath.ear-EJB-metrics-instance",type=Component already registered.
  |         at org.jboss.mx.server.registry.BasicMBeanRegistry.add(BasicMBeanRegistry.java:756)
  |         at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:233)
  | Caused by:
  | java.lang.IllegalStateException: refspath.ear-EJB-metrics-instance is already installed.
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:716)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)
  |         at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:121)
  |         at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:51)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
  |         at <unknown class>.<unknown method>(Unknown Source)
  |         ... 26 more
  | 16:22:34,265 WARN [HDScanner] Failed to process changes 

which actually is a MC thing and our lack of understanding/control of what a component name's scope is http://www.jboss.org/index.html?module=bb&op=viewtopic&t=154305

And furthermore, the MBean that MC is trying to register:

jboss.deployment:id="refspath.ear-EJB-metrics-instance",type=Component

 is an debug level MBean which is now disabled by default in AS trunk https://jira.jboss.org/jira/browse/JBAS-6987. Probably we need to do this in EAP branch (and maybe AS 5_x branch) too? 

However, the real solution for JNDI names would be to fix our default JNDI naming scheme (and still be backward compatible).


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