| description = "Micro-benchmarks for conjunctive (AND) filter evaluation. Each subgroup exercises a different predicate pattern (per-predicate cost, selectivity, conjunct count, string-column width, row count, correlation, selectivity drift, plus an order-neutral control) so the suite can show how an adaptive predicate-ordering system behaves across them -- the kind of change these benchmarks are meant to help drive, e.g. https://github.com/apache/datafusion/issues/11262. By default it measures DataFusion's built-in left-deep AND short-circuit and sets no engine config of its own; toggle a system under test with its native DATAFUSION_* env var (the harness reads SessionConfig::from_env), e.g. DATAFUSION_EXECUTION_ADAPTIVE_FILTER_REORDERING=true. Subgroups (BENCH_SUBGROUP): costsel, cost, selectivity, cardinality, width, scale, neutral, correlation, drift. Size synthetic data with PRED_ROWS and string-column width with PRED_FILL." |
