New evidence linking far-right leader Bardella to antisemitic messages revealed
New evidence links far-right leader Bardella to antisemitic messages. The revelations raise concerns about his associations and rhetoric. (lemonde.fr)
Remove pgrust: the entry is cheating
github.com50 points21 comments
This pull request removes pgrust from the ClickBench benchmark because its submission was explicitly tuned for the 43 benchmark queries and relied on mechanisms that violate benchmark rules. Verification against the published v0.4-preview binary (which self-identifies as 0.3-beta) and public v0.3 source shows one hand-written kernel per ClickBench query (files like crates/gravity/backend/irprobe/src/q00.rs … q36.rs and tpch_q01.rs), planner matchers named after benchmark queries, an environment knob PGRUST_GRAVITY_Q20_VARIANT, and included verbatim benchmark SQL compiled into the executor. The public source documents “hand-lowered physical plans for all 43 ClickBench queries,” metadata-only answers for several queries, and hardcoded rewrites and patterns used to avoid general execution.
Measured behavior proves that hot runs replay cached answers rather than executing scans: on a 96-core Graviton, Q20 ran 10.8 s cold then 11 ms on the second run (other queries showed similar 100-1000x drops), and explain output labels some queries as “windowreplay” or “metaanswer.” No configuration reliably disables the cross-query/result cache, and many trivially perturbed or out-of-shape queries are refused with explicit errors (e.g., MIN(URL), AVG(UserID+1), regexp variants); INSERT/UPDATE/DELETE are unsupported on the columnar table. The 43 query answers match ClickHouse, but the measured number reflects a tuned lookup table and caching strategy, so the entry was removed and the branch merged and deleted.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
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