Spider Federated Overview

An overview of the federated topology for Spider, where a single Spider node aggregates data from multiple remote data nodes, acting as a unified access point.

Overview

Choose an operation for the Sharded MariaDB Enterprise Spider topology:

Operation	Description
Backup and Restore	How to create a new backup or restore an existing backup.
Migrate Tables	How to update the character set or collation.
Update Character Set or Collation	How to update the character set or collation.
Update Connection Options	How to update the connection options for a Data Node.

Update Character Sets and Collations

The character set or collation for the Spider Table can be updated or modified using the ALTER TABLE statement.

On the Spider Node, alter the Spider Table's character set and collation:

ALTER TABLE spider_hq_sales.invoices
   DEFAULT CHARACTER SET 'utf8mb4'
   DEFAULT COLLATE 'utf8mb4_general_ci';

If the new character set and collation are not compatible with the character set and collation used by the Data Table, you must also alter the character set and collation for the Data Table on the Data Node.

Update Connection Options

In a Federated MariaDB Enterprise Spider topology, the connection options for a Data Node can be updated using the ALTER TABLE statement.

• On the Spider Node*, alter the table's connection details:

ALTER TABLE spider_hq_sales.invoices
   COMMENT = 'server "new_hq_server", table "invoices"'

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