16. Why aren't these improvements merged into the official MySQL?
Optimizations have been recommended to the official team and have received acknowledgment. However, they are assigned low priority in official bug fixes. Simple optimizations may take considerable time to be integrated, while complex ones might never be implemented.
As a result, the decision was made to open-source the MySQL optimized version to ensure effective application in high-end scenarios.
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From FAQ:
16. Why aren't these improvements merged into the official MySQL?
Optimizations have been recommended to the official team and have received acknowledgment. However, they are assigned low priority in official bug fixes. Simple optimizations may take considerable time to be integrated, while complex ones might never be implemented.
As a result, the decision was made to open-source the MySQL optimized version to ensure effective application in high-end scenarios.