Struct RangeLoad 

pub struct RangeLoad {
    pub bytes_used: u64,
    pub read_ops: u64,
    pub write_ops: u64,
}

The live load on one range: its on-disk size and its recent read/write traffic.

bytes_used feeds the primary capacity signal (it is what a member’s bytes-used is summed from); read_ops/write_ops feed the secondary hotspot signal. Keeping both on one struct lets a single PlacementSignals::range_load call answer everything the planner needs about a range.

Fields

bytes_used: u64

The range’s on-disk size in bytes — the primary capacity signal.

read_ops: u64

Read operations served in the recent observation window.

write_ops: u64

Write operations served in the recent observation window.

Implementations

impl RangeLoad

pub fn idle(bytes_used: u64) -> RangeLoad

A range that occupies bytes_used but serves no traffic — handy when only the capacity signal matters.

pub fn traffic(&self) -> u64

Total read + write traffic — the hotspot signal. A range with high traffic relative to the cluster mean is a hotspot candidate regardless of its size.

Trait Implementations

impl Clone for RangeLoad

fn clone(&self) -> RangeLoad

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RangeLoad

impl Debug for RangeLoad

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

Formats the value using the given formatter.

impl Default for RangeLoad

fn default() -> RangeLoad

Returns the “default value” for a type.

impl Eq for RangeLoad

impl PartialEq for RangeLoad

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for RangeLoad