title: Celery with redis as a queue - I cant find a way to find out what tasks are prefetched
body: <p>Is there some way, how to retrieve info on tasks that are prefetched in celery with Redis as a queue? </p>
  
  <p>This prefetched tasks are like ghosts. They are not being processed nor are waiting in the queue so I for redis they are invisible.</p>
  
  <p>With rabbitMQ+celery I could see all tasks (combining the both's API). But with redis, I cant see anything (Actually I could only count tasks in the queue -> which is wrong, because tasks in the queue equals prefetched + queued). Celery's inspect is also not helpful.</p>
  
  <p>Is there some simple solution, does redis has some nice API in <strong>python</strong> with which I could see where are my tasks?</p>
  
  <p>Thanks in advance</p>