Offline Feature Server

Offline feature server

Description

The Offline feature server is an Apache Arrow Flight Server that uses the gRPC communication protocol to exchange data. This server wraps calls to existing offline store implementations and exposes interfaces as Arrow Flight endpoints.

How to configure the server

CLI

There is a CLI command that starts the Offline feature server: feast serve_offline. By default, remote offline server uses port 8815, the port can be overridden with a --port flag.

Deploying as a service on Kubernetes

The Offline feature server can be deployed using helm chart see this helm chart.

User need to set feast_mode=offline, when installing Offline feature server as shown in the helm command below:

helm install feast-offline-server feast-charts/feast-feature-server --set feast_mode=offline  --set feature_store_yaml_base64=$(base64 > feature_store.yaml)

Server Example

The complete example can be found under remote-offline-store-example

How to configure the client

Please see the detail how to configure offline store client remote-offline-store.md

Functionality Matrix

The set of functionalities supported by remote offline stores is the same as those supported by offline stores with the SDK, which are described in detail here.

Offline Feature Server Permissions and Access Control

API Endpoints and Permissions

Endpoint	Resource Type	Permission	Description
offline_write_batch	FeatureView	Write Offline	Write a batch of data to the offline store
write_logged_features	FeatureService	Write Offline	Write logged features to the offline store
persist	DataSource	Write Offline	Persist the result of a read in the offline store
get_historical_features	FeatureView	Read Offline	Retrieve historical features
pull_all_from_table_or_query	DataSource	Read Offline	Pull all data from a table or read it
pull_latest_from_table_or_query	DataSource	Read Offline	Pull the latest data from a table or read it

How to configure Authentication and Authorization ?

Please refer the page for more details on how to configure authentication and authorization.