mirror of
https://github.com/ModernRelay/omnigraph.git
synced 2026-06-21 02:28:07 +02:00
787d41ec5f
Replace the fixed frontier<=1024 && hops<=6 dispatch threshold with a pure,
IO-free cost model. choose_expand_mode compares the indexed path's
frontier-relative work (hops * frontier * fanout, or hops * |E| when BTREE
coverage is degraded) against the cost of building the whole-graph CSR
(BUILD_FACTOR * |E|), from cheap manifest row counts. Under good coverage this
reduces to a selectivity ratio independent of |E|, preserving the flat-in-|E|
indexed win for selective traversals while routing dense / deep / high-fanout
or degraded-and-expensive traversals to CSR.
execute_expand decides cardinality-first and only opens the edge dataset to
confirm coverage when it leans indexed (no open on a clearly-CSR traversal).
The two env knobs become hard ceilings layered on the model; the
OMNIGRAPH_TRAVERSAL_MODE override still forces a path; the chosen mode is
traced. Results are unchanged across modes — only the path differs.
Adds inline crossover unit tests and extends the traversal_indexed both_modes
harness with an auto pass asserting the chooser is result-preserving across
every traversal shape. Documents the new flag semantics in
docs/user/{constants,query-language}.md.
|
||
|---|---|---|
| .. | ||
| audit.md | ||
| branches-commits.md | ||
| changes.md | ||
| cli-reference.md | ||
| cli.md | ||
| constants.md | ||
| deployment.md | ||
| embeddings.md | ||
| errors.md | ||
| index.md | ||
| indexes.md | ||
| install.md | ||
| maintenance.md | ||
| policy.md | ||
| query-language.md | ||
| schema-language.md | ||
| schema-lint.md | ||
| server.md | ||
| storage.md | ||
| transactions.md | ||