Parameter	Sample Value	Description
iceberg_s3_path required	s3://<BUCKET_NAME>/	S3 bucket path where Iceberg table data and metadata files will be stored.
aws_region required	ap-south-1	AWS Region where your S3 bucket and Glue Data Catalog exist. Required so OLake Go calls the correct regional S3 and Glue endpoints.
aws_access_key	XXX	AWS access key ID for S3 authentication. Optional if using IAM roles or instance profiles. If using IAM: add the required IAM environment variables in your shell or runtime environment.
aws_secret_key	XXX	AWS secret access key for S3 authentication. Optional if using IAM roles or instance profiles. If using IAM: add the required IAM environment variables in your shell or runtime environment.
s3_endpoint	https://glue.ap-south-1.amazonaws.com	S3 API endpoint for reading/writing Iceberg data files. Optional for AWS S3 but required for S3-compatible storage like MinIO.
glue_additional_config	true/false	Enable custom Glue catalog configuration when Glue catalog settings differ from S3 (different credentials, region, or endpoint). Leave off when Glue and S3 use the same AWS setup.
arrow_writes	false	Writes data and delete files using Apache Arrow based writer and registers them in Iceberg.

When using separate Glue catalog settings, set glue_additional_config to true in destination.json and add the fields below. These configure Glue catalog connection settings separately from the S3 fields above.

Parameter	Sample Value	Description
glue_catalog_id	123456789012	AWS account ID used as the Glue Data Catalog identifier.
glue_access_key	XXX	Access key for authenticating Glue catalog requests. Required when Glue credentials differ from S3 credentials.
glue_secret_key	XXX	Secret key for authenticating Glue catalog requests. Required when Glue credentials differ from S3 credentials.
glue_endpoint	https://glue.ap-south-1.amazonaws.com	Custom endpoint URL for AWS Glue or a Glue-compatible catalog service.
glue_region	ap-south-1	Region for the Glue catalog, if different from the S3 region. Falls back to AWS Region if not set.