MySQL 5.7.12 发布

MySQL 5.7.12 发布了。

安全提升：

InnoDB: The InnoDB tablespace encryption feature, which provides at-rest data encryption for InnoDB tables, now supports Oracle Key Vault for encryption key management. Oracle Key Vault support relies on the keyring_okvplugin which is available in MySQL Enterprise Edition. A secure and robust encryption key management solution such as OKV is critical for security and for compliance with various security standards. For more information, see InnoDB Tablespace Encryption.
The linked OpenSSL library for the MySQL Commercial Server has been updated to version 1.0.1s. Issues fixed in the new version are described at http://www.openssl.org/news/vulnerabilities.html.
This change does not affect the Oracle-produced MySQL Community build of MySQL Server, which uses the yaSSL library instead. (Bug #22685885, Bug #22923458)
MySQL Enterprise Edition now includes a keyring_okv plugin that uses Oracle Key Vault for keyring backend storage. For more information, see The MySQL Keyring.

功能增加：

For queries with many OR conditions, the optimizer now is more memory-efficient and less likely to exceed the memory limit imposed by the range_optimizer_max_mem_size system variable. In addition, the default value for that variable has been raised from 1536000 to 8388608. (Bug #79450, Bug #22283790)

Bug 修复：

InnoDB; Partitioning: INSERT and SELECT statements against a partitionedInnoDB table having generated columns were not always handled correctly. (Bug #22444530)
References: See also Bug #21776494, Bug #21824564, Bug #21864838.
InnoDB: An error was returned on startup when a replication slave attempted to access an encrypted table. The server UUID used to compose the master key name was not persisted to the tablespace data file, resulting in the use of an incorrect master key. (Bug #22912582)
InnoDB: In debug builds, an unnecessary buf_block_align() call could cause a latching order violation. A DML operation resulted in a page mismatch assertion due to the same buf_block_align() call. (Bug #22709463, Bug #21321238)
InnoDB: An ALTER TABLE ... ADD COLUMN operation on a table with virtual columns raised an assertion. (Bug #22650296)
InnoDB: An unnecessary comparison in tablespace encryption code caused compiler warnings. (Bug #22645816)