Comments - Down/crossgrading MySQL 5.more to MariaDB 5.less?
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Thank you for the response. As I noted, we are using MyISAM. Certainly, there will be testing on lab boxes, but there's only so much coverage for edge incompatibilities as we have 10,000+ tables across many clients and scores of access patterns. I was looking for known downgrade scripts or the like. Guess we'll have to set out alone!
MyISAM in MySQL 5.5 and MariaDB 5.3 does not have many changes... MariaDB 5.3 has a more enhanced MyISAM (segmented key caches for example, were introduced in 5.2 already).
Good luck with testing, and remember to report any bugs to https://bugs.launchpad.net/maria/+bugs
Thanks for the more detailed addendum. That makes me a bit more confident.