Public bug reported: Copied from debian bug report with slight changes.
Hi, I am recently upgrading one of the slaves of a master-slave replication to feisty, for 2 reasons: 1. attempt to fix http://bugs.mysql.com/bug.php?id=20188 which claims to be fixed since 5.0.24 2. rehearse the migration; since we can afford zero downtime, we can only first migrate slave to new version, switch it to a master, and then upgrade the original master with a reversed replication Then I begin to be hit by http://bugs.mysql.com/bug.php?id=24432 . To repeat the details in the 2 bug reports, the fix of 20188 has introduced another bug which make any version newer than 5.0.24 give a wrong auto_increment behavior (irrespective to replication). This behavior is finally fixed by 24432 in the recent 5.0.38 version. The wrong auto_increment behavior in its own is a bit mild (it skips some usable auto_increment values) but it causes replication problems with other master/slave without this bug. This bug is serious because any of the master or the slave with version between 5.0.24 and 5.0.36 inclusive will make replication fail, although it will work if both master and slave are within this range of versions. See the chart in the bug report for more details. If feisty ships with an unpatched version of 5.0.32, then people will have a hard time upgrading to feisty, and also upgrading to feisty+1 later. Since the bug is only fixed in upstream in 5.0.38, which is very unlikely to be uploaded to feisty, I propose to backport the patch. Here is the patch: http://lists.mysql.com/commits/19547 Backporting the patch will be a bit tricky, since upstream has inserted some code to detect version numbers to determine whether a certain replication will fail or survive. If ubuntu make their 5.0.32-10ubuntu1 free of this bug, then the logic there has to be altered. Maybe it is safe for us to drop the checking, but this may cause problem if some people run a replication between ubuntu and another distro. -- Regards, Alan ** Affects: mysql-dfsg-5.0 (Ubuntu) Importance: Undecided Status: Unconfirmed ** Affects: mysql-dfsg-5.0 (Debian) Importance: Unknown Status: Unknown ** Bug watch added: Debian Bug tracker #416145 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=416145 ** Also affects: mysql-dfsg-5.0 (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=416145 Importance: Unknown Status: Unknown -- Replication failure with auto-increment and on duplicate key update https://launchpad.net/bugs/95821 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
