source.json

{
  "bucket_name": "my-data-warehouse",
  "region": "us-east-1",
  "path_prefix": "data/",
  "access_key_id": "<YOUR_AWS_ACCESS_KEY_ID>",
  "secret_access_key": "<YOUR_AWS_SECRET_ACCESS_KEY>",
  "file_format": "parquet",
  "max_threads": 10,
  "retry_count": 3
}

Alternative: Use environment variables instead of hardcoding credentials:

export AWS_ACCESS_KEY_ID="your_access_key"
export AWS_SECRET_ACCESS_KEY="your_secret_key"

Then omit credentials from the config file - the driver will use environment variables automatically.