[APLO-176] "Detected store change in range" warning message are occasionally displayed once a queue grows large

• Type: Question
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5
• Component/s: apollo-broker
• Environment: apollo-99-trunk-20120306.040517-2
• Assignee: Hiram R. Chirino
• Reporter: Lionel Cons
• Created: 28/Mar/12 05:47
• Updated: 28/Sep/12 16:59
• Resolved: 28/Sep/12 16:59

Description

On one of our brokers, we detected the following messages:

2012-03-27 17:17:33,678 | INFO | Detected store change in range 622852159 to 622862157. 3869 message(s) and 617003 bytes | org.apache.activemq.apollo.broker.QueueEntry | hawtdispatch-DEFAULT-2
2012-03-27 17:18:26,337 | INFO | Detected store change in range 623647284 to 623657282. 6355 message(s) and 947641 bytes | org.apache.activemq.apollo.broker.QueueEntry | hawtdispatch-DEFAULT-2
2012-03-27 17:19:41,528 | INFO | Detected store change in range 624785258 to 624788515. 62 message(s) and 8246 bytes | org.apache.activemq.apollo.broker.QueueEntry | hawtdispatch-DEFAULT-5
2012-03-27 17:19:57,644 | INFO | Detected store change in range 625016042 to 625022112. 62 message(s) and 8246 bytes | org.apache.activemq.apollo.broker.QueueEntry | hawtdispatch-DEFAULT-2
2012-03-27 17:19:58,280 | INFO | Detected store change in range 625016863 to 625026923. -62 message(s) and -8246 bytes | org.apache.activemq.apollo.broker.QueueEntry | hawtdispatch-DEFAULT-1
2012-03-27 17:21:05,636 | INFO | Detected store change in range 626032257 to 626042255. 6543 message(s) and 1075071 bytes | org.apache.activemq.apollo.broker.QueueEntry | hawtdispatch-DEFAULT-3
[...]

Since they are marked as INFO I hope they are harmless (please confirm) but I would anyway like to understand what they mean and why they are logged.