perf(fts): enable the bulk MAXSCORE path by default#7604
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This was referenced Jul 3, 2026
With right-sized partitions the bulk path reaches Lucene-parity latency (k10 0.034-0.037s/213-235qps vs Lucene 10.4's 0.037s/216qps on the same 200M-doc corpus, queries, and warm protocol) and its results are score-identical to the classic WAND loop. LANCE_FTS_MAXSCORE=0 opts back into the classic loop.
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Stacked on the bulk MAXSCORE PR; flips the default.
Verification vs #7603 (its base)
Per-branch-tip wheels on the 200M-doc v3-256 index (1000 3-word OR queries
× 8 concurrent, warm): default-on reproduces #7603's opt-in numbers exactly
— k10 0.0342s vs 0.0342s, k100 0.0628s vs 0.0629s — i.e. the 3× win over
the classic loop now applies by default at both operating points. AND
queries are untouched (k10 0.113s vs #7602's 0.115s, within noise).
Results are score-identical to the classic WAND loop.
LANCE_FTS_MAXSCORE=0opts back into the classic loop.🤖 Generated with Claude Code