HBase online store

Description

The HBase online store provides support for materializing feature values into an Apache HBase database for serving online features in real-time.

Each feature view is mapped to an HBase table
Connects to HBase via the Thrift server using happybase

Getting started

In order to use this online store, you'll need to run pip install 'feast[hbase]'.

Example

{% code title="feature_store.yaml" %}

yaml

project: my_feature_repo
registry: data/registry.db
provider: local
online_store:
    type: hbase
    host: localhost
    port: "9090"
    connection_pool_size: 4    # optional
    protocol: binary           # optional
    transport: buffered        # optional

{% endcode %}

The full set of configuration options is available in HbaseOnlineStoreConfig.

Functionality Matrix

The set of functionality supported by online stores is described in detail here. Below is a matrix indicating which functionality is supported by the HBase online store.

	HBase
write feature values to the online store	yes
read feature values from the online store	yes
update infrastructure (e.g. tables) in the online store	yes
teardown infrastructure (e.g. tables) in the online store	yes
generate a plan of infrastructure changes	no
support for on-demand transforms	yes
readable by Python SDK	yes
readable by Java	no
readable by Go	no
support for entityless feature views	yes
support for concurrent writing to the same key	no
support for ttl (time to live) at retrieval	no
support for deleting expired data	no
collocated by feature view	yes
collocated by feature service	no
collocated by entity key	no

To compare this set of functionality against other online stores, please see the full functionality matrix.