The debug queue is used for debugging batch jobs and should not be used for production runs. Also, any resubmitting jobs will be deleted without warning. No more than 1 job per user may run in the debug queue at any time. The highbatch queue is designed to allow users to run a batch job with a shorter time limit that will get quicker turn around. The limitation is that this queue can only be used for a maximum of 1 hour twice a week.
Usage is tracked, and cleared twice a week.
The mtasklg queue will only be run outside of Prime Time. See Prime Time Policy above. There are times when special circumstances require quick turnaround. For such circumstances there is the special queue. If you feel you require use of the special queue, there are questions you need to answer, such as a job description and justification of use.