MariaDB ColumnStore是在MariaDB
10.1基础上移植了 InfiniDB 4.6.2
构建的大规模并行,高性能,压缩,分布式开源列式存储引擎,类似收费产品Infobright。它设计用于大数据离线分析,用来抗衡Hadoop。你可以使用标准SQL语句进行查询,支持目前流行的sqlyog/navicat客户端工具连接,对业务方使用没有任何的不便,并且你不需要创建任何索引,不需要修改业务方的复杂SQL(自身就支持复杂的关联查询、聚合、存储过程和用户定义的函数),你唯一要做的就是把数据导入到ColumnStore里,就没你事了。这对一家没有Hadoop工程师的公司来说,MariaDB
ColumnStore会是一个更好的替代产品。
Notable changes
Bugs and issues fixed MCOL-963 - self join cte queries from tpcds alternately fail with parsing error and succeed but with incorrect results MCOL-976 - System in DBRM_READ_ONLY mode after Non-parent PM recovery under DataRedundancy MCOL-989 - The addmodule command reported an invalid password error if cluster on the new module is not running MCOL-997 - postConfigure on a DataRed setup should exiting when system install prompt is answered 'n' MCOL-998 - MySQL replication is not replicating after installation MCOL-1008 - LDI and INSERT...SELECT causes mysqld to crash with long VARCHAR entries MCOL-1009 - MCS Replication setup failure - mysqld failed to restart MCOL-1010 - Debian 9 package: postConfigure failed to create /etc/rc.d/rc.local file MCOL-1014 - Replication setup failed when using ssh key and schema sync enabled MCOL-1016 - information_schema.columnstore_extents data_size calculation incorrect MCOL-1020 - On ovh data center servers, postConfigure crashed on upgrade MCOL-1021 - Dictionary deduplication cache is not working correctly MCOL-1024 - postConfigure reported system catalog creation error but database continue to work
此外还包含了很多其他 bug 修复。 |