Struct ColumnTemperatureTracker 

pub struct ColumnTemperatureTracker { /* private fields */ }

Column temperature tracker for all columns in a table

Implementations

impl ColumnTemperatureTracker

pub fn new(column_names: &[String], window_size: u64) -> Self

Create a new temperature tracker

pub fn record_updates(&self, column_names: &[&str])

Record an update to specific columns

pub fn get_hot_columns(&self) -> HashSet<String>

Get hot columns (above threshold)

pub fn get_cold_columns(&self) -> HashSet<String>

Get cold columns (at or below threshold)

pub fn get_all_temperatures(&self) -> Vec<ColumnTemperature>

Get all temperatures for reporting

pub fn set_hot_threshold(&self, threshold: f64)

Set hot threshold (lock-free via atomic u64 bit pattern)

Threshold ∈ [0.0, 1.0]. Columns with temperature > threshold are “hot” and participate in compaction merges. Lower threshold = more columns treated as hot.

Trait Implementations

impl Debug for ColumnTemperatureTracker

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

Formats the value using the given formatter.