Ray Chen

@shenoy-anurag Regarding as CELERYD_PREFETCH_MULTIPLIER =1 settings. you have to also set CELERY_TASK_ACKS_LATE = True. please check https://docs.celeryproject.org/en/latest/userguide/optimizing.html#reserve-one-task-at-a-time If you use django and `app.config_from_object('django.conf:settings', namespace='CELERY')`, you must use `CELERY_WORKER_PREFETCH_MULTIPLIER` as parameter...

@hmatland we team hit same issue, just disable the heatbeart can workaround this issue. pls try. `broker_heartbeat = 0` https://www.rabbitmq.com/heartbeats.html

any update?