Percona Server 5.5.43-37.2 發布，性能改進的 MySQL數據庫

Percona 為 MySQL 數據庫服務器進行了改進，在功能和性能上較 MySQL 有著很顯著的提升。該版本提升了在高負載情況下的 InnoDB 的性能、為 DBA 提供一些非常有用的性能診斷工具；另外有更多的參數和命令來控制服務器行為。

Percona Server 只包含 MySQL 的服務器版，并沒有提供相應對 MySQL 的 Connector 和 GUI 工具進行改進。

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

Percona Server 5.5.43-37.2 發布，此版本基于 MySQL 5.5.43，包括其所有 bug 修復，是當前 5.5 系列的安全版本。

更新內容：

Bugs 修復

• A server binary as distributed in binary tarballs could fail to load on different systems due to an unsatisfied libssl.so.6 dynamic library dependency. Bug fixed #1172916.

• mysql_install_db would make the server produce an “Error in my_thread_global_end(): 1 threads didn't exit” error message. Bug fixed #1402074.

• A string literal containing an invalid UTF-8 sequence could be treated as falsely equal to a UTF-8 column value with no invalid sequences.  (MDEV-7649).

• Percona Server .deb binaries were built without fast mutexes. Bug fixed #1433980.

• Installing or uninstalling the Audit Log Plugin would crash the server if the audit_log_file variable was pointing to an inaccessible path. Bug fixed #1435606.

• The audit_log_file variable would point to random memory area if the Audit Log Plugin was not loaded into server, and then installed with INSTALL PLUGIN, and my.cnf contained audit_log_file setting. Bug fixed #1437505.

• Percona Server client .deb packages were built with with EditLine instead of Readline. Bugs fixed #1266386 and #1332822 (upstream #63130 and #69991).

其他 bug 修復： #1436138 (upstream #76505).

更多內容請看發行說明。