dcausse added a comment.
In T356773#9531179 <https://phabricator.wikimedia.org/T356773#9531179>, @EgonWillighagen wrote: > I tried to get the federation working, but got time outs too. The problem is that the current setup makes splits at a statement level. That is, given statements with some property (e.g. P2860 <https://phabricator.wikimedia.org/P2860> and P1433 <https://phabricator.wikimedia.org/P1433>), some results are in one QS instance and some are in the other. That means a lot of federation-union combinations to get all results. I posted an example query that is affected (the first I tried) in this issue report: https://github.com/WDscholia/scholia/issues/2423 I got this query rewritten at https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/WDQS_graph_split/Federated_Queries_Examples#Number_of_articles_with_CiTO-annotated_citations_by_year, I agree that given the current split strategy we have to UNION the main and scholarly articles graph most of the time. TASK DETAIL https://phabricator.wikimedia.org/T356773 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Sannita, dcausse Cc: Physikerwelt, EgonWillighagen, ArthurPSmith, Sj, dcausse, valerio.bozzolan, tfmorris, Gehel, Aklapper, Danny_Benjafield_WMDE, Astuthiodit_1, karapayneWMDE, Invadibot, maantietaja, ItamarWMDE, Akuckartz, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, EBjune, KimKelting, LawExplorer, _jensen, rosalieper, Scott_WUaS, Wikidata-bugs, aude, Mbch331
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