Delta Lake
Connect a Delta Lake table for federated analysis. The table is read at its storage location and can be joined with datasets from other connectors.
How Delta is addressed
A Delta connection points at one Delta table by its path. Unlike Iceberg, there is no separate catalog service — the table path is the address, and the transaction log at that path defines the current table state.
The path can be:
- An object-storage location, e.g.
s3://bucket/delta-table/. Provide the storage credentials to read it. - A local filesystem path — available in the desktop app and self-hosted deployments, not on the managed service (see Managed vs. self-hosted).
Before you begin
- The table path.
- If the path is object storage, read credentials for that storage (see object-storage access credentials).
Connection settings
Choose the storage location first, then provide the path:
| Field | Required | Description |
|---|---|---|
| Storage location | Yes | Object storage, or a local path where the environment permits it. |
| Delta table path | Yes | The table's root, e.g. s3://bucket/delta-table/. |
For an object-storage path, also provide the object-storage access credentials — vendor preset, endpoint, region, keys, URL style, SSL.
Test and save
Enter the fields and use Test connection. On success, the table is available for analysis.
Capabilities
- Execution model: Federated. The Delta table can be joined with datasets from other connectors.
- Access: Read-only. The current snapshot defined by the transaction log is read.
- Backends: S3-compatible object storage; local paths on desktop / self-hosted only.
Troubleshooting
- Table not found — verify the path points at the table root (the directory containing the transaction log), not a single data file.
- Access denied — for an object-storage path, confirm the credentials grant read access and the region is correct.
- Credential fields are hidden — they appear only when the storage location is set to object storage; a local path does not use them.
Related
- Connectors overview · Iceberg · DuckLake · S3