Cron jobs executes more times than desired when using jitter

When using the jitter option in a scheduled cron jobs, for example using the code from the documentation:

# Run the job_function every sharp hour with an extra-delay picked randomly in a [-120,+120] seconds window. sched.add_job(job_function, 'cron', hour='*', jitter=120)

if the job is scheduled before the sharp hour then the job will be scheduled for the same hour again. For example:

• A Job is defined to be runned at sharp hours.

• Job is scheduled to run at 14:59:51

• Job runs at 14:59:51 but its scheduled to run at 15:00:02 again. In this case we only want the job to run once at ~15:00:00.

Attached is a small piece of code to test this behaiviour: test.zip

[agronholm]

For the record, this has been addressed in master by ensuring that jitter always places the execution time after the last run time and before the next run time after that.

[agronholm]

I’m closing this as done since v4.0.0a1 is out now.