Struct StackStats 

pub struct StackStats {
    pub sealed_rows: u64,
    pub total_rows: u64,
    pub tail_hits: u64,
    pub absent: u64,
    pub unabsorbed_rows: u64,
    pub tail_txns: u64,
    pub tail_bytes: u64,
    pub rebuilds: u64,
    pub generation: u64,
}

A snapshot of the stack’s counters. Everything here is applied output — rows that exist, lookups that happened — not configuration echoed back.

Fields

sealed_rows: u64

Objects in the Arrow/stree projection.

total_rows: u64

Objects in the repository. Always ≥ sealed_rows; the difference is the un-absorbed tail.

tail_hits: u64

Lookups the stree missed and redb answered, since the last rebuild.

absent: u64

Lookups nothing answered — the object is not in this repository. Never drives the trigger.

unabsorbed_rows: u64

Rows the projection does not cover yet. Zero means the projection is the truth, which is what lets a miss be answered without a redb round trip at all.

tail_txns: u64

redb read transactions opened by the read path since the last rebuild. The number that shows whether the completeness fast path is actually being taken; there is no other way to see it from outside.

tail_bytes: u64

Object bytes appended since the last rebuild.

rebuilds: u64

Projections built over this stack’s lifetime, including the one at open.

generation: u64

Bumped by every rebuild. An IndexRow::ordinal is only meaningful within one generation.

Trait Implementations

impl Clone for StackStats

fn clone(&self) -> StackStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StackStats

impl Debug for StackStats

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

Formats the value using the given formatter.

impl Default for StackStats

fn default() -> StackStats

Returns the “default value” for a type.

impl Eq for StackStats

impl PartialEq for StackStats

fn eq(&self, other: &StackStats) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for StackStats