Searching git history, it appears the following commit introduced the change back in 2013:
468e69765145ddad199963260e4774d179ad5555 That first appears in 5.9.0. So, it was longer ago than I realized ;-). Cheers! -- View this message in context: http://activemq.2283324.n4.nabble.com/Message-Group-Limitations-how-many-simulataneous-groups-are-supported-tp4706412p4706461.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.