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Asked: 2026-06-01T09:17:30+00:00

In docs link about expires # Task expires after one minute from now. add.apply_async(args=[10,

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In docs link about expires

# Task expires after one minute from now.
add.apply_async(args=[10, 10], expires=60)

I use:

from tasks import add
result = add.apply_async(args=[10, 10], expires=6000)
printus(result)

def printus(result):
    print (result) #task id
    print (result.ready()) # returns True if the task has finished processing.
    print (result.result) # task is not ready, so no return value yet.
    print (result.get())  # Waits until the task is done and returns the retval.
    print (result.result) # direct access to result, doesn't re-raise errors.
    print (result.successful()) # returns True if the task didn't end in failure.)

tasks.py

from celery.task import task
@task
def add(x, y):
    return x + y

In celeryd:

[2012-03-21 19:50:03,012: WARNING/MainProcess] Skipping revoked task: tasks.add[4ffcff91-b12b-4bce-8d47-159314759859]

In console:

4ffcff91-b12b-4bce-8d47-159314759859
True

Traceback (most recent call last):
  File "/home/echeg/Dropbox/my_py/opoveshun/tests/celery/run_task.py", line 53, in <module>
    tr.countdown()
  File "/home/echeg/Dropbox/my_py/opoveshun/tests/celery/run_task.py", line 26, in countdown
    self.printus(result)
  File "/home/echeg/Dropbox/my_py/opoveshun/tests/celery/run_task.py", line 48, in printus
    print (result.get())  # Waits until the task is done and returns the retval.
  File "/usr/local/lib/python2.7/dist-packages/celery/result.py", line 95, in get
    interval=interval)
  File "/usr/local/lib/python2.7/dist-packages/celery/backends/amqp.py", line 144, in wait_for
    raise self.exception_to_python(meta["result"])
celery.exceptions.TaskRevokedError

Why do I get an exception? The result has not expired

If i use: 

result = add.apply_async(args=[10, 10])

all ok

226107de-f739-4860-83bc-d843f17a257e
False
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20
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1 Answer

  1. Editorial Team

    celeryd thinks your task has expired:

    [2012-03-21 19:50:03,012: WARNING/MainProcess] Skipping revoked task: tasks.add[4ffcff91-b12b-4bce-8d47-159314759859]

    When an expired task is picked up by a worker, it revokes it without executing. Check your timezone settings? I had the inverse problem: tasks weren’t expiring when they should have. This fixed it for me:

    CELERY_ENABLE_UTC = True
CELERY_TIMEZONE = 'Etc/UTC'
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