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This guide provides the configuration parameters for connecting RisingWave to the object storage backend for your Apache Iceberg data. These parameters are used in the WITH clause when creating an Iceberg source, sink, or connection.

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S3-compatible storage

These parameters configure the connection to an S3-compatible storage system, such as AWS S3 or MinIO, where your Iceberg data files are stored.
ParameterDescription
warehouse.pathRequired. The base path to your Iceberg warehouse. Example: 's3://my-bucket/iceberg-warehouse'
s3.regionRequired. The AWS region where the bucket is hosted.
s3.access.keyRequired. The AWS access key ID.
s3.secret.keyRequired. The AWS secret access key.
s3.endpointOptional. The endpoint for S3-compatible services like MinIO. For AWS S3, this is typically not needed.
s3.path.style.accessOptional. Set to true to use path-style access (e.g., for MinIO). Defaults to false for virtual-hosted–style access.

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Google Cloud Storage (GCS)

These parameters configure the connection to Google Cloud Storage.
Support for GCS was added in RisingWave v2.3.0.
ParameterDescription
warehouse.pathRequired. The GCS path to your warehouse. Example: 'gs://my-bucket/iceberg-warehouse'
gcs.credentialOptional. The Base64-encoded credential key from a GCS service account JSON file. If not provided, Application Default Credentials (ADC) will be used.
Example
CREATE SINK my_iceberg_sink FROM my_mv WITH (
    connector = 'iceberg',
    type = 'append-only',
    catalog.type = 'rest',
    catalog.uri = 'http://127.0.0.1:8181',
    warehouse.path = 'gs://my-bucket/warehouse',
    gcs.credential = '...'
);

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Azure Blob Storage

These parameters configure the connection to Azure Blob Storage.
Support for Azure Blob Storage was added in RisingWave v2.4.0.
ParameterDescription
warehouse.pathRequired. The Azure Blob Storage path. Example: 'azblob://container-name/warehouse'
azblob.account_nameRequired. The Azure Storage account name.
azblob.account_keyRequired. The Azure Storage account key.
azblob.endpoint_urlOptional. The endpoint URL for the Azure Blob service. Defaults to https://<account_name>.blob.core.windows.net/.
Example
CREATE SINK my_iceberg_sink FROM my_mv WITH (
    connector = 'iceberg',
    type = 'append-only',
    catalog.type = 'storage',
    warehouse.path = 'azblob://my-container/warehouse',
    azblob.account_name = 'myaccount',
    azblob.account_key = '...'
);
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