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Add a lockmode for the update_notifications_status_by_id to prevent the timeout task from updating the same notification more than once.

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This happens because more than one beat process was creating the timeout task, resulting in multiple workers running the same queries at the same time.
This commit is contained in:
Rebecca Law
2016-07-08 14:48:07 +01:00
parent d28775800c
commit 1bfd25107b
2 changed files with 7 additions and 5 deletions
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2
app/dao/notifications_dao.py
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@@ -246,7 +246,7 @@ def _update_notification_status(notification, status, notification_statistics_st
@transactional
def update_notification_status_by_id(notification_id, status, notification_statistics_status=None):
notification = Notification.query.filter(
notification = Notification.query.with_lockmode("update").filter(
Notification.id == notification_id,
or_(Notification.status == 'created',
Notification.status == 'sending',