Terracotta Discussion Forums (LEGACY READ-ONLY ARCHIVE)

I have strored job information into sybase database.
when next time start job, I want to change trigger's cron expression.
but after modify trigger's cron expression then rescheduleJob， find nextFireTime is before than previousTime. About 1 minute later, the nextFireTime becomes correct? How can I get correct nextFireTime immediately after rescheduleJob(newTrigger).