Struct CompactionPolicy 

pub struct CompactionPolicy {
    pub after_frames: usize,
}

When a log should be compacted.

Compaction folds many small frames into one large one. The point is NOT the schema — measured, that is only 21.8% of a frame — but Arrow’s 64-byte buffer alignment, which a four-row batch pays six times over and a twenty-thousand-row batch pays once.

Fields

after_frames: usize

Compact once the log holds at least this many frames. Zero disables it.

Implementations

impl CompactionPolicy

pub const fn never() -> Self

pub fn should_compact(&self, frames: usize) -> bool

Trait Implementations

impl Clone for CompactionPolicy

fn clone(&self) -> CompactionPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CompactionPolicy

impl Debug for CompactionPolicy

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

Formats the value using the given formatter.

impl Default for CompactionPolicy

fn default() -> Self

Returns the “default value” for a type.

impl Eq for CompactionPolicy

impl PartialEq for CompactionPolicy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CompactionPolicy