Quartz Scheduler suddenly stop running and no exception error

Question

I have some quartz job which was running everyday at 7pm. Suddenly it failed to run. I check my server.log and there are no exception thrown. Anyone have any idea what could

Answer 1

If you are using a database to store jobs, check the trigger_state of your trigger. Right now I'm seeing a similar problem (or at least it has similar symptoms).

A job that runs once a minute is leaving the trigger in "ACQUIRED" state and will never run again. Like you I'm seeing nothing the the log.

I'm also seeing a different cause of the same problem. Again, the job just stops running, but the trigger is not in the "ACQUIRED" state. So far I don't know the cause.

What I know so far is that the scheduler thread is waiting for a free worker thread. It looks like all of the worker threads are waiting for a semaphore in order to update their schedule. I haven't been able to get a thread dump yet to verify what the worker threads are waiting on.

I'm running Quartz 1.6.1 RC1. See this bug report: http://jira.opensymphony.com/browse/QUARTZ-668

I think that's what I'm seeing.