Struct SplitPlan 

pub struct SplitPlan {
    pub source: TabletDescriptor,
    pub children: [ChildPlan; 2],
    pub split_key: Key,
    pub split_ts: HlcTimestamp,
}

One split: the source (pre-Splitting, at its initiation generation g), the two children (lower half first), the split key, and the pinned split timestamp.

Fields

source: TabletDescriptor

The source tablet as it was at initiation (Active, generation g).

children: [ChildPlan; 2]

The children, lower half first; their bounds meet at split_key.

split_key: Key

The chosen split key.

split_ts: HlcTimestamp

The timestamp the source snapshot is pinned at.

Implementations

impl SplitPlan

pub fn validate(&self) -> Result<(), SplitError>

Structural validation: the split key partitions the source exactly into the child bounds, ids are fresh and distinct, and the creation-time child descriptors are structurally valid.

pub fn child_descriptors(&self) -> [TabletDescriptor; 2]

The child descriptors as created in step 3: Creating at the inception generation (g + 1), every replica a learner. Creating tablets are never routed to (spec section 12.5).

Trait Implementations

impl Clone for SplitPlan

fn clone(&self) -> SplitPlan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SplitPlan

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

Formats the value using the given formatter.