Overview
The Wikidata Platform team has decided to decommission the legacy full graph endpoint (wdqs2009) for the WDQS. This endpoint was created to provide a longer migration timeline for users of WDQS with academic and testing use cases dependent on a full graph representation, following the graph split earlier this year. Upon release to the community, it was announced that the legacy endpoint would be only be available until December 2025.
We are requesting SRE support to turn off this endpoint and depool it from the WDQS cluster on Tuesday January 20th, 2026. This timeline will allow for community support through the rest of the year with relevant stakeholders (now - Jan. 6th) and provide time for WDP to triage issues stemming from the change (Jan. 7th - Jan. 9th).
Justification
WDP is primarily focused on the stability and scalability of the Wikidata platform. Maintaining the legacy endpoint is not strategically aligned with these efforts. The key area of investment from now until the end of FY25-26 is migrating away from Blazegraph and towards a more reliable backend triple store system. Reducing operational burden (the legacy endpoint has no SLOs, but SREs and WDP still respond to incidents) and freeing up hw will help us pursue our priorities.
We have aligned upon this work and the requested timeline for the change to take effect with power users of the legacy endpoint.