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django/docs/releases/1.11.16.txt

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Fixed #29499 -- Fixed race condition in QuerySet.update_or_create(). A race condition happened when the object didn't already exist and another process/thread created the object before update_or_create() did and then attempted to update the object, also before update_or_create() saved the object. The update by the other process/thread could be lost.
2018-08-01 17:52:28 +08:00
============================
Django 1.11.16 release notes
============================
Added release date for 1.11.16.
2018-10-01 15:33:28 +08:00
*October 1, 2018*
Fixed #29499 -- Fixed race condition in QuerySet.update_or_create(). A race condition happened when the object didn't already exist and another process/thread created the object before update_or_create() did and then attempted to update the object, also before update_or_create() saved the object. The update by the other process/thread could be lost.
2018-08-01 17:52:28 +08:00
Django 1.11.16 fixes a data loss bug in 1.11.15.
Bugfixes
========
* Fixed a race condition in ``QuerySet.update_or_create()`` that could result
in data loss (:ticket:`29499`).