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Fixed #27683 -- Made MySQL default to the read committed isolation level.

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Thanks Shai Berger for test help and Adam Johnson for review.
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Tim Graham 2017-02-01 15:34:17 -05:00 • committed by GitHub
parent c4e18bb1ce
commit 924af638e4
5 changed files with 40 additions and 13 deletions
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10
docs/ref/databases.txt
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@ -449,8 +449,14 @@ this entry are the four standard isolation levels:
* ``'serializable'``
or ``None`` to use the server's configured isolation level. However, Django
works best with read committed rather than MySQL's default, repeatable read.
Data loss is possible with repeatable read.
works best with and defaults to read committed rather than MySQL's default,
repeatable read. Data loss is possible with repeatable read.
.. versionchanged:: 2.0
In older versions, the MySQL database backend defaults to using the
database's isolation level (which defaults to repeatable read) rather
than read committed.
.. _transaction isolation level: https://dev.mysql.com/doc/refman/en/innodb-transaction-isolation-levels.html