Struct GhostStub 

pub struct GhostStub {
    pub node_id: String,
    pub target_shard: u16,
    pub refcount: u32,
    pub created_at_ms: u64,
}

Ghost edge stub.

When vShard rebalancing moves a node to a new shard, a ghost stub (node_id, target_shard_id, refcount) remains on the source. During traversal, ghost stubs trigger transparent scatter-gather to the target shard. Ghosts are garbage-collected when refcount (number of inbound edges from this shard) reaches zero.

Fields

node_id: String

The node ID that was moved.

target_shard: u16

The target vShard where the node now lives.

refcount: u32

Number of local edges that still reference this ghost.

created_at_ms: u64

When this ghost was created.

Implementations

impl GhostStub

pub fn new(node_id: String, target_shard: u16, initial_refcount: u32) -> Self

pub fn decrement_ref(&mut self) -> bool

Decrement refcount when a local edge pointing to this ghost is deleted. Returns true if refcount reached zero (ghost can be purged).

pub fn increment_ref(&mut self)

Increment refcount when a local edge pointing to this ghost is added.

Trait Implementations

impl Clone for GhostStub

fn clone(&self) -> GhostStub

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GhostStub

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

Formats the value using the given formatter.

impl PartialEq for GhostStub

fn eq(&self, other: &GhostStub) -> 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 Eq for GhostStub

impl StructuralPartialEq for GhostStub