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Internal Spark Catalogs

IOMETE allows users to create new catalogs that function as Iceberg REST Catalogs, managed internally by IOMETE. These catalogs are accessible externally via the path /catalogs/<catalog name> and integrate seamlessly with data security rules enforcing role-based access control (RBAC). A valid session or a PAT token is required for authentication.

Spark Rest Catalogs Solution | IOMETESpark Rest Catalogs Solution | IOMETE

Select Iceberg REST Catalog from the Managed Catalogs section, and the following input fields will appear:

  • Name: The name of the catalog.
  • Warehouse: The URL of an S3-compatible warehouse (IOMETE only supports object stores compatible with Amazon S3 APIs).
Spark Catalog create | IOMETESpark Catalog create | IOMETE

[Optional] Configuring a different S3 Compatible Storage​

By default, IOMETE will use the S3 compatible storage and credentials that are configured by your administrator when installing IOMETE. If you wish to use different credentials or a different storage provider for this catalog, click on the Enable Custom Credentials checkbox. Then, you'll see additional input fields for your credentials.

  • Endpoint - If using AWS S3 you can omit the endpoint, for Minio and Dell ECS storage providers the endpoint is mandatory.
  • Access key
  • Secret key
Spark Catalog create | IOMETESpark Catalog create | IOMETE

[Optional] Configuring Additional Properties and Resource Tags​

You can configure Additional Properties that Catalog Properties that IOMETE will expose for this Catalog. You may also add Resource Tagging.

  1. Additional Properties (Optional)
    • Customize Spark catalog behavior by adding key-value pairs.
    • Click Add property
    • Enter Key and Value
  2. Resource Tags (Optional)
    • Organize IOMETE resources with custom tags.
    • Click Add tag Enter Key and Value
Spark Catalogs | IOMETESpark Catalogs | IOMETE

Validating and Saving​

After filling all inputs click Test Connection to test the setup. This will run a series of tests to validate connectivity and various permissions.

Click Create or Save to save your settings. The new catalog will appear in catalog list.

Test Connection | IOMETETest Connection | IOMETE
Edit & Delete

Editing and deleting the default catalog is not permitted; you can only make changes to other catalogs.

Using a new catalog

Make sure to restart relevant Lakehouses and Spark Connect instances to ensure a newly created Catalog can be used

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