Percona Server for MySQL 5.7.22-22 发布

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Percona Server for MySQL 5.7.22-22 已于 5 月 31 日发布，基于 MySQL 5.7.22，包含其中所有的 bug 修复，Percona Server for MySQL 5.7.22-22 是目前 5.7 系列的最新稳定版本。更新如下：

New Features:

• A new --encrypt-tmp-files option turns on encryption for the temporary files which Percona Server may create on disk for filesort, binary log transactional caches and Group Replication caches.

Bugs Fixed:

• Executing the SHOW GLOBAL STATUS expression could cause “data drift” on global status variables in case of a query rollback: the variable, being by its nature a counter and allowing only an increase, could return to its previous value. Bug fixed #3951 (upstream #90351).
• NUMA support was improved in Percona Server, reverting upstream implementation back to the original one,due to upstream variant being less effective in memory allocation. Now  innodb_numa_interleave variable not only enables NUMA interleave memory policy for the InnoDB buffer pool allocation, but forces NUMA interleaved allocation at the buffer pool initialization time. Bug fixed #3967.
• audit_log_include_accounts variable did not take effect if placed in my.cnf configuration file, while still working as intended if set dynamically. Bug fixed #3867.
• A key_block_size value was set automatically by the Improved MEMORY Storage Engine, which resulted in warnings when changing the engine type to InnoDB, and constantly growing key_block_size during alter operations. Bugs fixed #3936, #3940, and #3943.
• Fixes were introduced to remove GCC 8 compilation warnings for the Percona Server build. Bug fixed #3950.
• An InnoDB Memcached Plugin code clean-up was backported from MySQL 8.0. Bug fixed  #4506.
• Percona Server could not be built with -DWITH_LZ4=system option on Ubuntu 14.04 (Trusty) because of too old LZ4 packages. Bug fixed #3842.
• A regression brought during TokuDB code clean-up in 5.7.21-21 was causing assertion in cases when the FT layer returns an error during an alter table operation. Bug fixed #4294.

MyRocks Changes and fixes:

• UPDATE statements were returning incorrect results because of not making a full table scan on tables with unique secondary index. Bug fixed #4495 (upstream facebook/mysql-5.6#830).

Other Bugs Fixed:

• #4451 “Implement better compression algo testing”
• #4469 “variable use out of scope bug in get_last_key test detected by ASAN in clang 6”
• #4470 “the cachetable-simple-pin-nonblocking-cheap test occasionally fails due to a locking conflict with the cachetable evictor”
• #4488 “-Werror is always disabled for innodb_memcached”
• #1114 “Assertion `inited == INDEX’ failed”
• #1130 “RBR Replication with concurrent XA in READ-COMMITTED takes supremum pseudo-records and breaks replication”

详情请查看发布说明 。

下载地址：

https://www.percona.com/downloads/Percona-Server-5.7/Percona-Server-5.7.22-22/
https://github.com/percona/percona-server/releases/tag/Percona-Server-5.7.22-22

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