These states occur for the Event Scheduler thread, threads that are created to execute scheduled events, or threads that terminate the scheduler.
The scheduler thread or a thread that was executing an event is terminating and is about to end.
The scheduler thread or a thread that will execute an event has been initialized.
The scheduler has a nonempty event queue but the next activation is in the future.
The thread issued
event_scheduler=OFF and is waiting for the
scheduler to stop.
The scheduler's event queue is empty and it is sleeping.
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