Run a chord callback even if the main tasks fail
问题 Is it possible to run a chord callback even if the main tasks failed? I've created a chord which I added a bunch of tasks and registered a callback to it. My problem, is that if one of the tasks fail the callback is not triggered, but I would like the callback to be triggered either way. I've tried to register the callback with si() (immutability) callback = tasks.run_delete_rule.si([timestamp]) header = [tasks.run_update_rule.s(i, timestamp) for i in item_ids] result = chord(header)(callback