Hi We are seeing an error in task execution , transaction is rollbacked an I believe its causing problems in deletion (fk violation) Shouldn't we have some kind of retry mechanism for deadlock ? Will be happy to get any thoughts on the matter Thanks
[root@s54-0 ~(keystone_cb2)]# mistral task-get-result 1ef3e610-1731-45bb-847c-25f0804ca83d "RemoteError: Remote error: InvalidRequestError This Session's transaction has been rolled back due to a previous exception during flush. To begin a new transaction with this Session, first issue Session.rollback(). Original exception was: (mysql_exceptions.OperationalError) (1213, 'Deadlock found when trying to get lock; try restarting transaction') [SQL: u'UPDATE executions_v2 SET updated_at=%s, state=%s WHERE executions_v2.id = %s'][parameters: (datetime.datetime(2016, 1, 27, 0, 11, 30, 305004), 'SUCCESS', '1ef3e610-1731-45bb-847c-25f0804ca83d')]\n[u'Traceback (most recent call last): n', u' File \"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py\", line 142, in _dispatch_and_reply n executor_callback)) n', u' File \"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py\", line 186, in _dispatch n executor_callback) n', u' File \"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py\", line 129, in _do_dispatch n result = func(ctxt, **new_args) n', u' File \"/usr/lib/python2.7/site-packages/mistral/engine/rpc.py\", line 144, in on_action_complete n return self._engine.on_action_complete(action_ex_id, result) n', u' File \"/usr/lib/python2.7/site-packages/mistral/utils/init_.py\", line 112, in _logged n return func(*args, **kw) n', u' File \"/usr/lib/python2.7/site-packages/mistral/engine/default_engine.py\", line 267, in on_action_complete n raise e n', u\"InvalidRequestError: This Session's transaction has been rolled back due to a previous exception during flush. To begin a new transaction with this Session, first issue Session.rollback().
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