Key should squash delayed calls but it doesn't. We can see on action_execution_checker example.
2018-06-08 18:00:12.739 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Scheduler captured 8 delayed calls. _capture_calls /opt/stack/mistral/mistral/services/scheduler.py:205
2018-06-08 18:00:12.740 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=ea737f54-95f0-4d4b-98c8-c3ef2ec54905, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.740 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=c3a25445-1d27-4254-8a34-0a27bf1d5cbb, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.741 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=e2b1e263-1d1f-46ea-9c6f-8c96babb17ee, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.742 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=f7f45ba7-af16-4cdd-af1e-a32239eb6536, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.742 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=c9931f5d-db16-491c-ace0-419c25554462, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.743 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=04394cdf-cfcd-4a88-befa-9a7e78329258, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.743 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=646d6cd8-593e-4c78-ac52-1c1f65f10a87, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.744 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Preparing next delayed call. [ID=122d095c-1639-4381-9d58-bfa64b44ffb2, factory_method_path=None, target_method_name=mistral.services.action_execution_checker.handle_expired_actions, method_arguments={}] _prepare_calls /opt/stack/mistral/mistral/services/scheduler.py:229
2018-06-08 18:00:12.745 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.748 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.754 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.757 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.763 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.765 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.771 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.773 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.779 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.782 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.788 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.791 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.797 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.801 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.806 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Running heartbeat checker... handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:35
2018-06-08 18:00:12.809 23 DEBUG mistral.services.action_execution_checker [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Found 0 running and expired actions. handle_expired_actions /opt/stack/mistral/mistral/services/action_execution_checker.py:47
2018-06-08 18:00:12.825 23 DEBUG mistral.services.scheduler [req-a8305106-b9e5-41f2-b28c-9cbe128b2645 - - - - -] Scheduler deleted 8 delayed calls. delete_calls /opt/stack/mistral/mistral/services/scheduler.py:310
> Key should squash delayed calls but it doesn't. We can see on action_ execution_ checker example.
Can you explain that a bit more? I don't fully understand this bug.