Test archive:
JBPAPP_5_0/testsuite/output/lib/refspath.ear

This ear contains two ejb.jars:
refspath-ejb1.jar
refspath-ejb2.jar

The ejb class names within the .jars are unique but they use the same name; i.e.,
@Stateless(name = "EJB")

causing the deployment to fail as the refspath.ear-EJB-metrics-instance is "already installed".

16:22:33,526 INFO [EJB3EndpointDeployer] Deploy AbstractBeanMetaData@31e831e8

{name=jboss.j2ee:ear=refspath.ear,jar=refspath-ejb1.jar,name=EJB,service=EJB3_endpoint bean=org.jboss.ejb3.endpoint.deployers.impl.EndpointImpl properties=[container] constructor=null autowireCandidate=true}

16:22:33,526 INFO [EJB3EndpointDeployer] Deploy AbstractBeanMetaData@46bc46bc

{name=jboss.j2ee:ear=refspath.ear,jar=refspath-ejb2.jar,name=EJB,service=EJB3_endpoint bean=org.jboss.ejb3.endpoint.deployers.impl.EndpointImpl properties=[container] constructor=null autowireCandidate=true}

16:22:33,527 INFO [Ejb3MetricsDeployer] Attaching MC Bean: refspath.ear-EJB-metrics-instance
16:22:33,527 INFO [Ejb3MetricsDeployer] Attaching MC Bean: refspath.ear-EJB-metrics-invocation
16:22:33,527 INFO [Ejb3MetricsDeployer] Attaching MC Bean: refspath.ear-EJB-metrics-instance
16:22:33,527 INFO [Ejb3MetricsDeployer] Attaching MC Bean: refspath.ear-EJB-metrics-invocation
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
org.jboss.deployers.client.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

• • • DEPLOYMENTS IN ERROR: Name -> Error

vfszip:/work/EAP5/JBPAPP_5_0/build/output/jboss-5.0.0.Beta/server/default/deploy/refspath.ear/ -> org.jboss.deployers.spi.DeploymentException: Error deploying: refspath.ear-EJB-metrics-instance