Struct CheckpointMetadata 

pub struct CheckpointMetadata {
    pub epoch: EpochId,
    pub log_sequence: u64,
    pub timestamp_ms: u64,
    pub tx_id: TxId,
}

Checkpoint metadata stored in a separate file.

This file is written atomically (via rename) during checkpoint and read during recovery to determine which WAL files can be skipped.

Fields

epoch: EpochId

The epoch at which the checkpoint was taken.

log_sequence: u64

The log sequence number at the time of checkpoint.

timestamp_ms: u64

Timestamp of the checkpoint (milliseconds since UNIX epoch).

tx_id: TxId

Transaction ID at checkpoint.

Trait Implementations

impl Clone for CheckpointMetadata

fn clone(&self) -> CheckpointMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CheckpointMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CheckpointMetadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CheckpointMetadata

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.