Enum HummockReadEpoch

pub enum HummockReadEpoch {
    Committed(HummockEpoch),
    BatchQueryCommitted(HummockEpoch, HummockVersionId),
    NoWait(HummockEpoch),
    Backup(HummockEpoch),
    TimeTravel(HummockEpoch),
}

Package read epoch of hummock, it be used for wait_epoch

Variants

Committed(HummockEpoch)

We need to wait the committed_epoch of the read table

BatchQueryCommitted(HummockEpoch, HummockVersionId)

We need to wait the committed_epoch of the read table and also the hummock version to the version id

NoWait(HummockEpoch)

We don’t need to wait epoch, we usually do stream reading with it.

Backup(HummockEpoch)

We don’t need to wait epoch.

TimeTravel(HummockEpoch)

Implementations

impl HummockReadEpoch

pub fn get_epoch(&self) -> HummockEpoch

pub fn is_read_committed(&self) -> bool

Trait Implementations

impl Clone for HummockReadEpoch

fn clone(&self) -> HummockReadEpoch

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HummockReadEpoch

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

Formats the value using the given formatter.

impl From<BatchQueryEpoch> for HummockReadEpoch

fn from(e: BatchQueryEpoch) -> Self

Converts to this type from the input type.

impl Copy for HummockReadEpoch