Percona Server v5.6.31-77.0 發布，MySQL 數據庫改進

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。

更新日志

新特性：

• Percona Server implemented protocol support for TLS 1.1 and TLS 1.2. This implementation turns off TLS v1.0 support by default.
• TokuDB MTR suite is now part of the default MTR suite in Percona Server 5.6.

Bugs修復:

• Querying the GLOBAL_TEMPORARY_TABLES table caused server crash if temporary table owning threads would execute new queries. Bug fixed #1581949.
• Audit Log Plugin would hang when trying to write log record of audit_log_buffer_size length. Bug fixed#1588439.
• Audit log in ASYNC mode could skip log records that don’t fit into log buffer. Bug fixed #1588447.
• The innodb_log_block_size feature attempted to diagnose the situation where the logs have been created with a log block value that differs from the current innodb_log_block_size setting. But this diagnostics came too late, and a misleading error No valid checkpoints found was produced first, aborting the startup. Bug fixed #1155156.
• Some transaction deadlocks did not increase the INFORMATION_SCHEMA.INNODB_METRICS lock_deadlockscounter. Bug fixed #1466414 (upstream #77399).
• InnoDB tablespace import failed when trying to import a table with different data directory. Bug fixed #1548597(upstream #76142).
• Audit Log Plugin truncated SQL queries to 512 bytes. Bug fixed #1557293.
• Regular user extra port connection failed if max_connections plus one SUPER user were already connected on the main port, even if it connecting would not violate the extra_max_connections. Bug fixed #1583147.
• The error log warning Too many connections was only printed for connection attempts whenmax_connections plus one SUPER have connected. If the extra SUPER is not connected, the warning was not printed for a non-SUPER connection attempt. Bug fixed #1583553.
• mysqlbinlog did not free the existing connection before opening a new remote one. Bug fixed #1587840(upstream #81675).
• Fixed memory leaks in mysqltest. Bugs fixed #1582718 and #1588318.
• Fixed memory leaks in mysqlcheck. Bug fixed #1582741.
• Fixed memory leak in mysqlbinlog. Bug fixed #1582761 (upstream #78223).
• Fixed memory leaks in mysqldump. Bug fixed #1587873 and #1588845 (upstream #81714).
• Fixed memory leak in non-existing defaults file handling. Bug fixed #1588344.
• Fixed memory leak in mysqlslap. Bug fixed #1588361.
• Transparent Huge Pages check will now only happen if tokudb_check_jemalloc option is set. Bugs fixed#939 and #713.
• Logging in ydb environment validation functions now prints more useful context. Bug fixed #722.

其他Bugs修復: #1588386, #1529885, #1541698 (upstream #80261), #1582681, #1583589, #1587426 (upstream, #81657),#1589431, #956, and #964.

下載

• Source code (zip)
• Source code (tar.gz)