Percona Server 5.6.21-70.0发布

　　Percona 为 MySQL 数据库服务器进行了改进，在功能和性能上较 MySQL 有着很显著的提升。该版本提升了在高负载情况下的 InnoDB 的性能、为 DBA 提供一些非常有用的性能诊断工具；另外有更多的参数和命令来控制服务器行为。

　　Percona Server 只包含 MySQL 的服务器版，并没有提供相应对 MySQL 的 Connector 和 GUI 工具进行改进。

　　Percona Server 使用了一些 google-mysql-tools, Proven Scaling, Open Query 对 MySQL 进行改造。

　　Percona Server 5.6.21-70.0 发布，此版本现已提供在 Percona 主页或者是 Percona 软件库。此版本支持 Ubuntu 14.10 和 CentOS7。

　　此版本是基于 MySQL 5.6.21，包括其所有的 bug 修复，是当前最新的稳定版本。

更新内容如下：

新特性

• Percona Server has ported new super-read-only option from WebScaleSQL.

• Percona Server has implemented CSV engine mode for standard-compliant quote and comma parsing. This feature also fixes the bug #1316042 (upstream #71091).

• Percona Server now supports Read Free Replication for TokuDB storage engine.

• TokuDB storage engine package has been updated to version 7.5.2.

Bugs 修复：

• Values of IP and DB fields in the Audit Log Plugin were incorrect. Bug fixed #1379023.

• Specifying the --malloc-lib during the server start would produce two LD_PRELOAD entries, if a system-wide jemalloc library was installed. Bug fixed #1382069.

• In multi-threaded slave replication setup, an incomplete log event group (the one which doesn’t end with COMMIT/ROLLBACK/XID) in a relay log could have caused a replication stall. An incomplete log event group might occur as a result of one of the following events: 1) slave crash; 2) STOP SLAVE or FLUSH LOGS command issued at a specific moment; 3) server shutdown at a specific moment. Bug fixed #1331586 (upstream #73066).

• Purging bitmaps exactly up to the last tracked LSN would abort XtraDB changed page tracking. Bug fixed #1382336.

• mysql_install_db script would silently ignore any mysqld startup failures. Bug fixed #1382782 (upstream #74440).

其他 bug 修复： #1369950, #1335590, #1067103, and #1282599.

更多更新内容请看 online documentation。