Struct RecallTelemetry 

pub struct RecallTelemetry {
    pub fts_candidates: usize,
    pub hnsw_candidates: usize,
    pub blend_weight_avg: f64,
    pub embedding_dim_mismatch: usize,
}

v0.6.3.1 (P3): internal telemetry returned alongside recall results.

Plumbed from db::recall_hybrid_with_telemetry / db::recall_with_telemetry up to mcp::handle_recall, which uses it to populate RecallMeta. Not serialized — RecallMeta is the public shape.

Fields

fts_candidates: usize

Candidates returned by the FTS5 stage before fusion.

hnsw_candidates: usize

Candidates returned by the HNSW (or linear-scan fallback) stage before fusion. 0 for keyword-only recall.

blend_weight_avg: f64

Average semantic blend weight applied across the returned set. 0.0 for keyword-only recall.

embedding_dim_mismatch: usize

v0.7.0 H7 — count of stored embeddings whose dimensionality disagreed with the active embedder model during this recall, so their semantic signal was forced to 0.0 and excluded from the ranking. 0 in steady state; non-zero means the embedder model changed and the affected rows need re-embedding. The recall path also emits one aggregated warn! per query when this is non-zero.

Trait Implementations

impl Clone for RecallTelemetry

fn clone(&self) -> RecallTelemetry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RecallTelemetry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RecallTelemetry

fn default() -> RecallTelemetry

Returns the “default value” for a type.