Struct JoinMetrics 

pub struct JoinMetrics {

    pub left_events: u64,
    pub right_events: u64,
    pub matches: u64,
    pub unmatched_left: u64,
    pub unmatched_right: u64,
    pub late_events: u64,
    pub state_cleanups: u64,
    pub cpu_friendly_encodes: u64,
    pub compact_encodes: u64,
    pub asymmetric_skips: u64,
    pub idle_key_cleanups: u64,
    pub build_side_prunes: u64,
    pub tracked_keys: u64,
}

Metrics for tracking join operations.

Fields

left_events: u64

Number of left events processed.

right_events: u64

Number of right events processed.

matches: u64

Number of join matches produced.

unmatched_left: u64

Number of unmatched left events emitted (left/full joins).

unmatched_right: u64

Number of unmatched right events emitted (right/full joins).

late_events: u64

Number of late events dropped.

state_cleanups: u64

Number of state entries cleaned up.

cpu_friendly_encodes: u64

Rows encoded with CPU-friendly format.

compact_encodes: u64

Rows encoded with compact format.

asymmetric_skips: u64

Compactions skipped due to asymmetric optimization.

idle_key_cleanups: u64

Idle keys cleaned up.

build_side_prunes: u64

Build-side entries pruned early.

tracked_keys: u64

Current number of tracked keys (for per-key tracking).

Implementations

impl JoinMetrics

pub fn new() -> Self

Creates new metrics.

pub fn reset(&mut self)

Resets all counters.

Trait Implementations

impl Clone for JoinMetrics

fn clone(&self) -> JoinMetrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinMetrics

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

Formats the value using the given formatter.

impl Default for JoinMetrics

fn default() -> JoinMetrics

Returns the “default value” for a type.