Public bug reported:
Binary package hint: python-mysqldb
Ubuntu has inherited a patch from Debian in Python's MySQLdb package which
is quite harmful to any application which needs transactional behavior.
Here is a comment in Storm which explains the problem:
# Here is another sad story about bad transactional behavior. MySQL
# offers a feature to automatically reconnect dropped connections.
# What sounds like a dream, is actually a nightmare for anyone who
# is dealing with transactions. When a reconnection happens, the
# currently running transaction is transparently rolled back, and
# everything that was being done is lost, without notice. Not only
# that, but the connection may be put back in AUTOCOMMIT mode, even
# when that's not the default MySQLdb behavior. The MySQL developers
# quickly understood that this is a terrible idea, and removed the
# behavior in MySQL 5.0.3. Unfortunately, Debian and Ubuntu still
# have a patch right now which *reenables* that behavior by default
# even past version 5.0.3.
** Affects: python-mysqldb (Ubuntu)
Importance: Undecided
Status: New
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MySQLdb reconnect patch is harmful
https://bugs.launchpad.net/bugs/163184
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