new_contents: import redis
  
  from django.conf import settings
  from django.core.management.base import BaseCommand
  
  
  class Command(BaseCommand):
  
      def handle(self, *args, **options):
          r = redis.StrictRedis(host=settings.GONDOR_REDIS_HOST, port=settings.GONDOR_REDIS_PORT, password=settings.GONDOR_REDIS_PASSWORD)
          i = 0
          for key in r.keys("celery-*"):
              r.delete(key)
              i += 1
          print "%d keys cleared" % i
  
subject: add a command to clear task metas