Struct HashShard 

pub struct HashShard {
    pub shards: usize,
    pub index: usize,
}

Parsed {shards, index} hash-modulo shard descriptor, produced by plan_hash_shards and applied by an object-store / file source’s apply_shard.

Fields

shards: usize

Total shard count in this run’s set.

index: usize

This shard’s index in 0..shards.

Implementations

impl HashShard

pub fn from_spec(spec: &ShardSpec) -> Option<Self>

Parse from a ShardSpec descriptor produced by plan_hash_shards. Returns None for a malformed descriptor (missing/ill-typed shards or index) — including the whole-dataset shard’s null descriptor, so callers must check ShardSpec::is_whole first.

pub fn contains(&self, key: &str) -> bool

Whether key belongs to this shard. A degenerate set of <= 1 shards owns every key.

Trait Implementations

impl Clone for HashShard

fn clone(&self) -> HashShard

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HashShard

impl Debug for HashShard

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

Formats the value using the given formatter.

impl Eq for HashShard

impl PartialEq for HashShard

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