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November 28, 2019 11:09
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A reproduction of worker starvation on result backend failure (see https://github.com/celery/celery/issues/5642)
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| import time | |
| from celery import Celery | |
| app = Celery( | |
| 'my_app', | |
| broker='pyamqp://guest@localhost:5673//', | |
| backend='redis://localhost', | |
| ) | |
| app.conf.worker_prefetch_multiplier = 1 | |
| app.conf.task_acks_late = True | |
| @app.task | |
| def fail(sleep_time): | |
| time.sleep(sleep_time) | |
| raise Exception('Oh oh') |
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