Commit 37587624 authored by Keith Edmiston's avatar Keith Edmiston Committed by Tim Graham
Browse files

[1.5.x] Fixed #16992 -- Added InnoDB warning regarding reuse of AUTO_INCREMENT values. 

Thanks kent at nsc.liu.se for the report.

Backport of c54fa1a7 from master
parent afc624ca

docs/ref/databases.txt

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@@ -161,7 +161,10 @@ full-text indexing and searching. 


Since MySQL 5.5.5, the default storage engine is InnoDB_. This engine is fully

transactional and supports foreign key references. It's probably the best

choice at this point.

choice at this point. However, note that the the InnoDB autoincrement counter

is lost on a MySQL restart because it does not remember the

``AUTO_INCREMENT`` value, instead recreating it as "max(id)+1". This may

result in an inadvertent reuse of :class:`~django.db.models.AutoField` values.



If you upgrade an existing project to MySQL 5.5.5 and subsequently add some

tables, ensure that your tables are using the same storage engine (i.e. MyISAM