Percona Server 5.6.35-81.0 发布，MySQL 衍生版

Percona Server 5.6.35-81.0 发布了，该版本基于 MySQL 5.6.35，并包括其中的所有错误修复。

Percona Server 5.6.35-81.0 是 Percona Server 5.6 系列中当前的 GA 版本。更新内容：

新特性：

Percona Server 已经实现了新的 mysqldump --order-by-primary-desc 选项。此功能告诉 mysqldump 通过降序主键顺序（PRIMARY KEY DESC）来执行备份，如果存储引擎对主键使用反向列，这可能很有用。

Bugs 修复：

When innodb_ft_result_cache_limit was exceeded by internal memory allocated by InnoDB during the FT scan not all memory was released which could lead to server assertion. Bug fixed #1634932 (upstream #83648).
Log tracking initialization did not find last valid bitmap data correctly, potentially resulting in needless redo log retracking or hole in the tracked LSN range. Bug fixed #1658055.
If Audit Log Plugin was unable to create file pointed by audit_log_file, the server would crash during the startup. Bug fixed #1666496.
A DROP TEMPORARY TABLE ... for a table created by a CREATE TEMPORARY TABLE ... SELECT ... would get logged in the binary log on a disconnect with mixed mode replication. Bug fixed #1671013.
TokuDB did not use an index with even if cardinality was good. Bug fixed #1671152.
Row-based replication events were not reflected in Rows_updated fields in the User StatisticsINFORMATION_SCHEMA tables. Bug fixed #995624.
A long-running binary log commit would block SHOW STATUS, which in turn could block a number of other operations such as client connects and disconnects. Bug fixed #1646100.
It was impossible to use column compression dictionaries with partitioned InnoDB tables. Bug fixed #1653104.
Diagnostics for OpenSSL errors have been improved. Bug fixed #1660339 (upstream #75311).
When DuplicateWeedout strategy was used for joins, use was not reported in the query plan info output extension for the slow query log. Bug fixed #1592694.