Duplicate message deliveries when start an MDB twice via CLI ------------------------------------------------------------- Key: WFLY-4470 URL: https://issues.jboss.org/browse/WFLY-4470 Project: WildFly Issue Type: Bug Components: EJB, JMS Affects Versions: 9.0.0.Beta2 Reporter: Chao Wang Assignee: Chao Wang Fix For: 9.0.0.CR1 Description of problem: A singleton MDB delivers duplicate messages when start-delivery() is invoked twice while the message being delivered Steps to Reproduce: 1. Create a producer, which keeps sending messages for every second 2. Deploy a singleton consumer MDB 3. Invoke start-delivery() method on the MDB while the messages being delivered Actual results: MDB delivers duplicate messages Expected results: MDB needs to ignore start-delivery() call if the MDB has already been started. Additional info: