Struct TombstoneTracker 

pub struct TombstoneTracker { /* private fields */ }

Small deterministic tombstone budget tracker used by the 0.41 gate tests.

Implementations

impl TombstoneTracker

pub fn new(budget: TombstoneBudget) -> Self

Create an empty tracker.

pub fn admit( &mut self, key: impl Into<String>, version: u64, approx_bytes: u64, gc_eligible_after: Option<ClusterEpoch>, ) -> TombstoneAdmission

Admit or replace a tombstone and enforce the budget.

pub fn confirm_repair(&mut self, key: &str, epoch: ClusterEpoch)

Mark a tombstone as repair-confirmed and eligible after epoch.

pub fn gc_eligible_after(&self, key: &str) -> Option<ClusterEpoch>

Return the epoch after which a tombstone may be GC’d, if repair was confirmed.

pub fn forget(&mut self, key: &str) -> bool

Forget a tombstone after the durable record has been reclaimed.

pub fn repair_debt(&self) -> bool

Return whether the tracker is in repair debt.

pub fn len(&self) -> usize

Return retained tombstone count.

pub fn is_empty(&self) -> bool

Return whether no tombstones are retained.

pub fn contains_key(&self, key: &str) -> bool

Return whether the key is retained.

Trait Implementations

impl Clone for TombstoneTracker

fn clone(&self) -> TombstoneTracker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TombstoneTracker

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

Formats the value using the given formatter.