HailDB 是一个用来嵌入 InnoDB 数据存储引擎的开发共享库，提供非常棒、高质量和可靠的 InnoDB 数据库引擎的集成。你可以用它来开发数据库。
1. This version was released to align chronologically with the next Drizzle milestone.
2. The Drizzle HailDB plugin for that release will require this version of HailDB.
3. This is a developer release. When hitting a constraint violation (duplicate key), HailDB returns which key was violated for more sensible error messages.
4. HailDB provides an API for table statistics.
5. HailDB is now properly registered to use trx_is_interrupted, which determines if the currently running transaction has been interrupted.
6. Code from Innodb 1.0.7 as included in MySQL 5.1.46 was merged