How to create a Singleton service in an EAP 6 cluster - Red Hat Customer Portal

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Issue

How to create a singleton service for EAP 6?
How HASingleton service can be migrated from EAP4/5 to EAP6?
What is the equivalent of a HASingleton of EAP 4 or EAP 5?
Is it possible to control the election of the instance where the singleton is started?
Is there a replacement for the PreferredMasterElectionPolicy in EAP 5?
We have a scenario (war inside ear file and spring context is loaded using ServletContextListener) to deploy ear file with HA singleton Cluster environment (Master node). I am not sure how to implement this use case with JBOSS 6.2.4 EAP version.

Environment

Red Hat JBoss Enterprise Application Server (EAP)
- 6.x

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