#21597: (2006, 'MySQL server has gone away') in django1.6 when wait_timeout
passed
-------------------------------------+-------------------------------------
Reporter: ekeydar@… | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.6
(models, ORM) | Resolution:
Severity: Normal | Triage Stage: Accepted
Keywords: mysql | Needs documentation: 0
Has patch: 0 | Patch needs improvement: 0
Needs tests: 0 | UI/UX: 0
Easy pickings: 0 |
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Comment (by andreis):
Hi,
to me it seems to be a bug. Old django would close every connection right
away, django 1.6 checks with CONN_MAX_AGE:
1. It gets CONN_MAX_AGE from DATABASES, sets close_at:
{{{
max_age = self.settings_dict['CONN_MAX_AGE']
self.close_at = None if max_age is None else time.time() + max_age
}}}
2. Actually the code above affects close_if_unusable_or_obsolete, which
closes the connection if 'self.close_at is not None and time.time() >=
self.close_at'
3. close_if_unusable_or_obsolete itself is being called by
close_old_connections, which in turn is a request handler for
signals.request_started and signals.request_finished.
We have a worker, which is effectively a django app but but it doesn't
process any HTTP requests. In fact that makes all connections persistent
because close_old_connections never gets called.
Please advise.
Thanks
--
Ticket URL: <https://code.djangoproject.com/ticket/21597#comment:12>
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