[jboss-jira] [JBoss JIRA] Commented: (EJBTHREE-2234) Clustered @Singleton

Clustered @Singleton -------------------- Key: EJBTHREE-2234 URL: https://issues.jboss.org/browse/EJBTHREE-2234 Project: EJB 3.0 Issue Type: Feature Request Reporter: Carlo de Wolf Labels: clustered Fix For: TBD AS 7, TBD EAP 6 It should be possible to create a clustered singleton by just adding the @Clustered annotation. @Singleton @Clustered public class MyScheduler { } Care should be taken that the life-cycle callbacks are only invoked once on one node, the other nodes will only receive the state of the singleton after post-construct. Concurrency management of the singleton should happen cross-cluster, so that a singleton with read lock can be concurrently invoked on any node. After existing a method with a write lock the state must be synchronized across the cluster before new invocations are processed.