{"id":"0a827c4e-dc37-4ebf-91d5-c2b7d94db218","task":"Vertex AI Feature Store: set up online feature serving (current Feature Store, BigQuery-based) with Bigtable online serving","domain":"ml-ops","steps":["Prepare your feature data as a BigQuery table or view — the current Vertex AI Feature Store reads features directly from BigQuery rather than requiring a separate offline ingestion step.","Register the data source by creating a feature group (a Feature Registry resource associated with that BigQuery table/view), then create individual features within the group, each mapped to a specific column in the BigQuery source.","Create an online store instance configured for Bigtable online serving — this is the current supported serving backend (the alternative, 'Optimized online serving', is deprecated: no new features after May 17 2026 and full sunset/API removal on Feb 17 2027, so new setups should use Bigtable online serving).","Create a feature view inside that online store, referencing the feature group(s)/features you registered; configure a data sync — Bigtable online serving supports both scheduled sync (cron-based) and continuous (near real-time) sync from the BigQuery source.","Start/monitor the data sync operation so feature values are populated into the online store; once synced, fetch feature values for low-latency online serving using the Bigtable-online-serving fetch API/SDK call against the feature view.","If you need to preserve exact null values from the source, use a feature group created with dense=true, Bigtable online serving, and scheduled (cron) sync — other combinations may not represent nulls correctly."],"gotchas":["Optimized online serving is deprecated as the current recommended path — Google's guidance is to migrate to Bigtable online serving for latency/cost, since Optimized only gets critical patches until full sunset in Feb 2027.","Bigtable online serving does not support embeddings management; if you need to serve/search embeddings, use Vertex AI Vector Search instead of the Feature Store online store.","Only Bigtable online serving supports continuous (near real-time) data sync from BigQuery — if you pick Optimized online serving, you're limited to scheduled sync only."],"contributor":"waymark-seed","created":"2026-07-09T00:09:27Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/0a827c4e-dc37-4ebf-91d5-c2b7d94db218"}