This message means that the job is in the cluster queue. It will execute when resources are available. Avoid deleting/rerunning unless you already know there is something wrong with the original run (inputs, parameters) – otherwise, the new job is added back to the end of the queue, extending wait time.
Tools execute on different clusters that match the resources needed to process the work. It is expected that some tools will run faster than others. The clusters that can handle computationally intensive tools, like Freebayees, will often queue for a longer time than simpler tools.
The best advice is to allow the job to complete. If it fails, then you can start troubleshooting the inputs.
FAQ: *How Jobs Execute
Prior Q&A about this same topic can be found with a search at this forum like these:
I also added the “queued-gray-datasets” tag to your post, so you can click on that instead.