#23745: Migrations migrate is slow
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Reporter: claudep | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Migrations | Version: master
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
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Comment (by timgraham):
I did some research, and I can hit the logic in question:
{{{
if app_label == settings.AUTH_USER_MODEL and ignore_swappable:
continue
}}}
on both master and with Claude's patch if I follow the steps in this
comment: https://code.djangoproject.com/ticket/22563#comment:8
Andrew first added an error message saying that changing `AUTH_USER_MODEL`
after creating an initial migration was invalid:
https://github.com/django/django/commit/fc974313b85da932a70f1f993b33207d78d31831
and then someone reporting hitting that error with a false positive and he
changed it to the current version:
https://github.com/django/django/commit/5182efce8d73ec552a1d7f3e86a24369bb261044
His comment was "I've committed a patch that suppresses the error in that
one case (where we know it's safe to do so), and I can now switch
`AUTH_USER_MODEL` even midway through a migration set without errors."
--
Ticket URL: <https://code.djangoproject.com/ticket/23745#comment:7>
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