The Ultimate Guide to High Availability with MariaDB

Configuring Cross-Engine Joins

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MariaDB ColumnStore allows columnstore tables to be joined with non-columnstore tables (i.e., MyIsam tables) within a query. The non-columnstore table may be on the MariaDB ColumnStore system OR an an external server that supports JDBC connections.

To enable this process, <CrossEngineSupport> section in Calpont.XML is configured with JDBC connection information. . The following is an example entry in the Calpont.XML configuration file to gain access to joined tables residing in native MariaDB on the same server as MariaDB ColumnStore:

<CrossEngineSupport>
       <Host>127.0.0.1</Host>
       <Port>3306</Port>
       <User>mydbuser</User>
       <Password>pwd</Password>
</CrossEngineSupport>

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