title: Celery worker hangs without any error
body: <p>I have a production setup for running celery workers for making a POST / GET request to remote service and storing result, It is handling load around 20k tasks per 15 min.</p>
  
  <p>The problem is that the workers go numb for no reason, no errors, no warnings.</p>
  
  <p>I have tried adding multiprocessing also, the same result.</p>
  
  <p>In log I see the increase in the time of executing task, like succeeded in s</p>
  
  <p>For more details look at <a href="https://github.com/celery/celery/issues/2621" rel="noreferrer">https://github.com/celery/celery/issues/2621</a></p>