Struct IncrementalTracker 

pub struct IncrementalTracker { /* private fields */ }

Tracks which HNSW entries have been modified since the last full snapshot

The caller is responsible for calling mark_dirty whenever a vector is inserted, updated, or logically removed from the index. After writing a full or incremental snapshot the caller should call mark_clean so the dirty set is cleared and the version counter is advanced.

Implementations

impl IncrementalTracker

pub fn new() -> Self

Create a fresh tracker with no dirty entries and version 0

pub fn mark_dirty(&mut self, id: u32)

Record that entry id has been inserted or modified

pub fn mark_clean(&mut self)

Clear the dirty set and advance the version counter

Should be called immediately after a snapshot (full or incremental) has been successfully written to stable storage.

pub fn record_full_snapshot(&mut self, time: SystemTime)

Record that a full snapshot was taken at time

pub fn dirty_ids(&self) -> &HashSet<u32>

Return a reference to the current set of dirty entry IDs

pub fn is_dirty(&self) -> bool

Return true if any entries have been modified since the last snapshot

pub fn dirty_count(&self) -> usize

Number of entries that are currently dirty

pub fn version(&self) -> u64

Current snapshot version (incremented after each mark_clean)

pub fn last_full_snapshot(&self) -> Option<SystemTime>

Timestamp of the last full snapshot, if any

Trait Implementations

impl Default for IncrementalTracker

fn default() -> Self

Returns the “default value” for a type.