Struct LeveledCompaction 

pub struct LeveledCompaction { /* private fields */ }

Leveled compaction planner + reference compaction routine.

Implementations

impl LeveledCompaction

pub fn new(config: LeveledCompactionConfig) -> Result<Self>

Create a new compaction planner.

pub fn pick_plan(&self, levels: &[Vec<SSTableMeta>]) -> Option<CompactionPlan>

Pick a compaction plan from per-level SSTable metadata.

The planner chooses:

• L0 → L1 when L0.len() >= l0_compaction_trigger.
• Otherwise, the first level n where size(Ln) > target_file_size * multiplier^n.

pub fn compact_entries( &self, sources: Vec<Box<dyn Iterator<Item = SSTableEntry>>>, output_level: usize, ) -> Result<Vec<Vec<SSTableEntry>>>

Compact multiple sorted entry streams and return output runs split by target_file_size.

If output_level is the last level (max_levels-1), tombstones and older versions for that key are removed completely (spec §3.4.3).

Trait Implementations

impl Clone for LeveledCompaction

fn clone(&self) -> LeveledCompaction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LeveledCompaction

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

Formats the value using the given formatter.