Struct LeasedShard 

pub struct LeasedShard {
    pub epoch: u64,
    pub expires_at_ms: u64,
    pub acked_epoch: u64,
    pub authority_generation: Option<u64>,
    pub acked_authority_generation: Option<u64>,
    pub relay_watermark_ms: u64,
    pub sweep_due_ms: u64,
}

The coordinator’s durable lease grant and installation acknowledgement.

acked_epoch = n means the shard durably holds epoch at least n, or every older-epoch write is already past its deadline. A live row’s acknowledgement is preserved by renewal and raised only after a committed shard push. An absent or expired row may acknowledge its grant immediately because older writes are past their commit deadlines.

Fields

epoch: u64

Epoch granted by the most recent renewal.

expires_at_ms: u64

Granted expiry; identical to the shard copy at grant.

acked_epoch: u64

Epoch whose installation in the shard has been acknowledged.

authority_generation: Option<u64>

Authority generation granted alongside the epoch.

acked_authority_generation: Option<u64>

Raised only after a committed push, or expiry of every older lease.

relay_watermark_ms: u64

Greatest source relay lower bound observed for this shard.

sweep_due_ms: u64

Due time of the one sweep timer owned by this row.

Trait Implementations

impl Clone for LeasedShard

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LeasedShard

impl Debug for LeasedShard

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LeasedShard

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for LeasedShard

impl PartialEq for LeasedShard

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for LeasedShard

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LeasedShard