I have faced the problem with bamboo queue priority plugin.
•When multiple jobs are sent to the Queue at approximately the same time, there is the potential for multiple jobs to be attempting to queue at the same time.
•If a second job attempts to queue and there is already a job in the process of queuing at the same priority, then the second job remains at the end of the queue
•Once there is a higher priority job “stuck” behind a lower priority job, no new jobs at that same higher priority will never move in front of the lower priority jobs.
Do you have an experience with this issue?
