#29499: Race condition in QuerySet.update_or_create()
-------------------------------------+-------------------------------------
Reporter: Michael Sanders | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 2.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: race-condition | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Simon Charette):
* stage: Unreviewed => Accepted
Comment:
The issue is legitimate and the suggested fix makes sense; if
`update_or_create` enforces `select_for_update()` when a row exists it
should always do so.
Would you be able to submit a PR on Github with some tests. I guess this
could qualify for backports as it's a possible data loss issue.
--
Ticket URL: <https://code.djangoproject.com/ticket/29499#comment:1>
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