Struct mz_txn_wal::txn_read::DataRemapEntry

pub struct DataRemapEntry<T> {
    pub physical_upper: T,
    pub logical_upper: T,
}

A mapping between the physical upper of a data shard and the largest upper which is known to logically have the same contents.

Said another way, [physical_upper,logical_upper) is known to be empty (in the “definite” sense).

Invariant: physical_upper <= logical_upper

Fields

physical_upper: T

The physical upper of a data shard.

logical_upper: T

An upper bound on the times known to be empty of writes via txns since physical_upper.

Trait Implementations

impl<T: Clone> Clone for DataRemapEntry<T>

fn clone(&self) -> DataRemapEntry<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for DataRemapEntry<T>

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

Formats the value using the given formatter.

impl<'de, T> Deserialize<'de> for DataRemapEntry<T>

where T: Deserialize<'de>,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> Serialize for DataRemapEntry<T>

where T: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.