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Releases: polardb/polardbx-engine

2.4.1

12 Nov 08:11
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changelog

新功能

支持large flashback功能, 新增 erase heap 优化 erase 性能
索引回表新增支持GUESS PRIMARY PAGE Cleanout特性,提高索引回表命中率。
支持集群之间的主从复制能力

修复

优化scan、purge、lock场景下聚簇索引的查询性能
优化 scn_history 系统表修改时的上锁逻辑减少上锁数量
修复闪回查询场景下索引可见性在跨DDL时判断不符合预期的问题。
修复Erase操作时不能严格按照 SCN顺序进行的问题。
修复表属性FLASHBACK AREA在数据字典和引擎中的不一致的问题。
修复Redo空间大小的计算错误的问题。
修复optimizer trace开启时sampling crash的问题
新增dbms_consensus.force_learner_node运维命令
新增手动备份恢复场景的运维参数以丰富恢复的扩展性
修复在备库上执行XA命令、rename table时crash的问题
修复部分debug日志打印过多的问题
修复备库备份集恢复实例时apply线程启动失败的问题
修复启动过程中pid文件创建过晚的问题
修复changset内存计算错误的问题
修复ccl高并发时惊群引起的性能问题
修复sequence 在某些场景下会崩溃问题
修复并行DDL导致shutdown时脏页无法刷新的问题
修复alter_stored_column_order Instant DDL redo日志记录错误的问题

2.4.0

11 May 09:37
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changelog

新功能

新增mysql内核从社区8.0.18升级至社区8.0.32
新增内置静态编译jemalloc 5.3.0
新增内置静态编译openssl 1.1.1
新增支持对长事务的超时主动关闭机制
新增支持对lizard事务槽保留时间单独控制功能
新增对server_id唯一性的强检查
新增对undo purge状态的sql展示

修复

修复大事务场景下的若干缺陷
修复Sampling Scan场景下若干缺陷

Features

Upgraded MySQL core from Community 8.0.18 to 8.0.32.
Added built-in static compilation of jemalloc 5.3.0.
Added built-in static compilation of OpenSSL 1.1.1.
Introduced a timeout mechanism for long transactions, which is off by default.
Added support for independent control of Lizard transaction slot retention time.
Implemented strong checks for the uniqueness of server_id.
Added SQL display for undo purge status.

Bugfixes

Fixed several defects in scenarios with large transactions.
Fixed several defects in Sampling Scan scenarios.

2.3.1

09 Apr 06:57
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[bugfix]
Minor fix for binlog issue.

2.3.0

15 Nov 06:47
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PolarDB-X 2.3.0 Release

2.0.0

04 Apr 08:09
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This release is not compatible with previous release

[Feature]

  1. InnoDB Support Sampling Scan
  2. GCN System Column

[bugfix]

  1. memory overflow

v1.0.3

23 Mar 08:20
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  1. some bugfix
  2. refactor polarx rpc
  3. sampling scan

v1.0.2

22 Aug 10:09
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GalaxyEngine_version_1.0.2

Release Version GalaxyEngine Version v1.0.2