Hibernate 4.2.21 发布了，该版本主要是 Bug 修复，包括： Bug [HHH-5255] - Merge detached entity failed when the instrumented lazy property is initialized [HHH-7573] - Lazy properties are not processed properly after a PreUpdate callback [HHH-9928] - Pending put leaks when the entity is not found in DB [HHH-10182] - Backport HHH-7898 and HHH-10005 for JTA environment only Hibernate 4.2.21 发布，Java 的 ORM 框架下载地址
