Configuring The Expiry Reaper Thread
22.3. Configuring The Expiry Reaper Thread A reaper thread will periodically inspect the queues to check if messages have expired. The reaper thread can be configured with the following properties in hornetq-configuration.xml message-expiry-scan-period How often the queues will be scanned to detect expired messages (in milliseconds, default is 30000ms, set to -1 to disable the reaper thread) message-expiry-thread-priority The reaper thread priority (it must be between 0 and 9, 9 being the highest priority, default is 3)