Has anyone seen this error in celery (a distribute task worker in Python) before?
Traceback (most recent call last): File "/home/mcapp/.virtualenv/lister/local/lib/python2.7/site-packages/celery/task/trace.py", line 228, in trace_task R = retval = fun(*args, **kwargs) File "/home/mcapp/.virtualenv/lister/local/lib/python2.7/site-packages/celery/task/trace.py", line 415, in protected_call return self.run(*args, **kwargs) File "/home/mcapp/lister/lister/tasks/init.py", line 69, in update_playlist_db video_update(videos) File "/home/mcapp/lister/lister/tasks/init.py", line 55, in video_update chord(tasks)(update_complete.s(update_id=update_id, update_type='db', complete=True)) File "/home/mcapp/.virtualenv/lister/local/lib/python2.7/site-packages/celery/canvas.py", line 464, in call _chord = self.type File "/home/mcapp/.virtualenv/lister/local/lib/python2.7/site-packages/celery/canvas.py", line 461, in type return self._type or self.tasks[0].type.app.tasks['celery.chord'] IndexError: list index out of range
This particular version of celery is 3.0.19, and happens when the celery chord feature is used. We don't think there is any error in our application, as 99% of the time our code works correctly, but under heavier loads this error would happen. We are trying to find out if this is an actual bug in our application or a celery bug, any help would be greatly appreciated.
