Sun Microsystems has released version 5.1 of the open-source MySQL database software, but the software's founder simultaneously warned of a number of "fatal" bugs present in the new features that are still to be fixed.
Michael "Monty" Widenius, the founder of MySQL, stated in a blog post on Saturday that most of the issues identified were serious or crashing bugs. Not all problems are related to the new features; there are a number of older, known bugs that are still present in this release.
The new features introduced have been ranked as "beta" quality.
There are a number of issues associated with the partitioning feature, such as the difficulty to restore a partitioned table if it crashes, and the chance of losing all data in the event of a server crashing during the rename table feature of a partitioned table. Widenius highlighted that the feature was inefficient, particularly if there were many partitions in a database.
Row-based replication has not been enabled by default, because of a number of problems. Users are advised to test the latest MySQL version before deploying it to production systems.
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