[AMQ-8061] Scheduled messages misloaded by ActiveMQ and then not fired in a job

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 5.15.1, 5.16.0
• Component/s: AMQP
• Labels: BTree job joblocation schedule
• Assignee: Jean-Baptiste Onofré
• Reporter: LEROY
• Created: 02/Nov/20 00:33
• Updated: 29/Mar/21 16:44
• Resolved: 29/Mar/21 16:44

Description

I need your help on the scheduled sending message functionnality.

My configuration is :

• ActiveMQ 5.15.1 (in production but I reproduce the issue with 5.16.0)
• kahadb default configuration

I got these files in the scheduler :

• db-24.log
• db-25.log
• scheduleDB.data
• scheduleDB.redo

When running, it sometimes happens that scheduled messages are no more fired by the job scheduler.
If we stop and restart the broker, it doesn't change anything :

• old scheduled messages are not fired
• new scheduled messages are not fired

If we remove the folder scheduler, and restart, new messages are correctly fired.

When I debug the job scheduler when launching with the old scheduled messages, something goes wrong in this file, org.apache.activemq.store.kahadb.scheduler.JobSchedulerImpl.java :

There are events, but no one has jobs :

The getNextToSchedule() method finds events but no one of these got correct jobs.

I tried to load the scheduled files with AMQ 5.15.1, 5.16.0, without success.

Any ideas what's going wrong ?

Thanks

[1]: https://i.stack.imgur.com/D09Pt.png
[2]: https://i.stack.imgur.com/jg63c.png