Scheduled Tasks stop working randomly

dev support
1

Has anyone run into a situation where scheduled tasks run for a random period of time and then just stop.

I have 2 tasks scheduled; 1 every 5 minutes and 1 every hour. They will run for a day to a week or longer and then just stop.

When stopped, I can run both from the browser with no error. I can also run them using Execute in the admin panel. No errors. No log entries (lucee at least) Watching CPU usage in ProxMox, I can see that when it’s running, it uses < 0.5% CPU and a steady 1GB of ram.

The one weird thing that I see (but don’t know if it matters) is that my task is set with a start time of 00:01:00 but it seems that every time it fails, the start time in the admin setup gets set to 23:08:31 (for the 5 minute task) or 23:27:01 for the hour task). I believe this is consistent behaviour.

If I reboot and set the start time back to 00:01:00, it seems to run correctly again. I don’t know if that’s a cause, side effect or irrelevant.

Any thoughts on where to look to trouble shoot this? Everything looks absolutely normal.

I guess I could just run wget/curl on the files and use cron instead?

Headless Debian 12
Java 21.0.7 (Eclipse Adoptium) 64bit
Apache Tomcat/11.0.6
Lucee 6.2.1.122

All running in a ProxMox VM with 12GB ram and lots of free disk space.

2

Try bumping up the scheduler.log log level to info?

3

Oh good tip. I’ll monitor. Thanks. I’ve also turned on info for http as these both use cfhttp calls.

There is an error showing up in scheduler which I assume has happened before but haven’t noticed it.

“ERROR”,“Thread-3”,“07/10/2025”,“23:27:08”,“schedule task:AQMonitor”,“Task is not valid”

Again with that weirdly specific 23:27:xx time (this was the 1 hour task) However this task is currently still running correctly.

What would cause a Task Not Valid error but not cause an exception to be thrown? The exception logs are empty.

4

Being open source you can easily answer that question by searching that in the lucee repo on GitHub or checking out a local copy and doing the same?

This could possibly related

https://luceeserver.atlassian.net/browse/LDEV-5650