Edgewall Software
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Opened 17 years ago

Closed 16 years ago

#5783 closed defect (fixed)

mysql connection drop issue, w/ patch

Reported by: amax@… Owned by: Christian Boos
Priority: high Milestone: 0.10.5
Component: general Version: 0.10.4
Severity: normal Keywords: mysql
Cc: Branch:
Release Notes:
API Changes:
Internal Changes:

Description

Hi,

We experienced a login defect with the AccountManagerPlugin, whose cause was eventually traced down to db/mysql_backend.py. Because the bug is in trac core, and not the plugin, we are recreating the ticket here. A patch that I believe fixes the issue is here:

http://trac-hacks.org/attachment/ticket/1493/mysql-autologoutbug.patch

The original ticket is here:

http://trac-hacks.org/ticket/1493

It is related to an older bug:

http://trac.edgewall.org/ticket/4802

In MySQLConnection.rollback(), the return value of self.cnx.ping() is checked (cnx is a MySQLdb connection object, IIRC). I believe this is faulty; ping() does not have a defined return value - see http://groups.google.com/group/trac-dev/browse_thread/thread/9c8adb7cf6993500 . While in practice the existing version works for some (or many), the patch above seems to work more universally.

As a data point, we have been using the above patch in our trac here (~10 developers) for over two months now, and it has been holding up well in our heterogenous environment.

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Change History (3)

comment:1 by Christian Boos, 16 years ago

Keywords: mysql added
Milestone: 0.10.5
Owner: changed from Jonas Borgström to Christian Boos
Status: newassigned

oops, I thought I fixed that already, but apparently not.

comment:2 by Christian Boos, 16 years ago

Priority: normalhigh

Similar error reported in #6806, and the proposed patch appears to work.

comment:3 by Christian Boos, 16 years ago

Resolution: fixed
Status: assignedclosed

Patch applied in r6506 (trunk) and r6507 (0.10.5). Thanks!

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