Enum RecoveryTarget 

pub enum RecoveryTarget {
    Lsn(u64),
    Timestamp(u64),
}

A Point-in-Time Recovery target (Task 3B PITR). See TxnWal::replay_to_target for the prefix semantics.

Variants

Lsn(u64)

Recover the first lsn WAL records (exact). Matches the value of DurableStorage::current_lsn() captured at the desired point.

Timestamp(u64)

Roll the WAL forward and STOP at the first transaction whose COMMIT timestamp (microseconds since the epoch) exceeds this value — that transaction and everything after it are excluded. This is an exact WAL-order PREFIX, NOT a timestamp filter: if commit timestamps are non-monotonic in WAL order (coarse ~1ms clock, NTP steps, cross-thread group commit), a later-in-WAL transaction with ts <= t that follows an excluded commit is ALSO excluded. Prefer Lsn for an exact, clock- independent cut.

Trait Implementations

impl Clone for RecoveryTarget

fn clone(&self) -> RecoveryTarget

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RecoveryTarget

impl Debug for RecoveryTarget

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

Formats the value using the given formatter.

impl Eq for RecoveryTarget

impl PartialEq for RecoveryTarget

fn eq(&self, other: &RecoveryTarget) -> 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 RecoveryTarget