Re: Need help investigating committed messages resurfacing after restart.

2017-10-27 Thread Tim Bain
Bumping the logging level is key to this; even if you succeed in finding data files that demonstrate what happened, without the more detailed logging it may be impossible to tell *why* it happened. If you get a large enough disk attached to the machine to hold months of logs, that's great, just mak

Re: Need help investigating committed messages resurfacing after restart.

2017-10-27 Thread hakanj
It is possible that there is a bug in the ack compaction feature, but if so it only shows itself in some very special cases. I have tried stressing it, but to no avail. In all my tests the broker does the right thing. There are no cron jobs deleting any files in this system. The broker thinks that

Re: Need help investigating committed messages resurfacing after restart.

2017-10-25 Thread Tim Bain
I've never seen anything like this on the mailing list, and the one project where I've been directly involved in managing brokers used non-persistent messaging exclusively so I've never seen it personally. Here are a few crazy ideas of what might possibly cause the behavior you described: - As