ClassNotFoundException: org.jgroups.ChannelFactory in EAP 6

Issue

• While migrating the application from eap 5.1 to 6.1.0, getting the following below exceptions,

Caused by: org.hibernate.HibernateException: could not instantiate RegionFactory [org.hibernate.cache.jbc2.JndiMultiplexedJBossCacheRegionFactory]
        at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:501)
        at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:289)
        at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2283)
        at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2279)
        at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1748)
        at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:94)
        at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:920)
        ... 9 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.6.0_45]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) [rt.jar:1.6.0_45]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) [rt.jar:1.6.0_45]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [rt.jar:1.6.0_45]
        at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:484)
        ... 15 more
Caused by: java.lang.NoClassDefFoundError: org/jgroups/ChannelFactory
        at org.hibernate.cache.jbc2.JndiMultiplexedJBossCacheRegionFactory.<init>(JndiMultiplexedJBossCacheRegionFactory.java:65)
        at org.hibernate.cache.jbc2.JndiMultiplexedJBossCacheRegionFactory.<init>(JndiMultiplexedJBossCacheRegionFactory.java:57)
        ... 20 more
Caused by: java.lang.ClassNotFoundException: org.jgroups.ChannelFactory from [Module "deployment.XXXX.ear:main" from Service Module Loader]
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:196) [jboss-modules.jar:1.2.0.Final-redhat-1]
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:444) [jboss-modules.jar:1.2.0.Final-redhat-1]

• The org.jgroups.ChannelFactory is used for clustering, however, there are no intensions of enabling Clustering here when the above exception(s) is popped up.

• The Hibernate version that's used here is Hibernate 4.x.