Enum SplitPhase 

pub enum SplitPhase {
    Started,
    MarkedSplitting,
    ChildrenCreated,
    SnapshotPinned,
    ChildrenBuilt,
    CaughtUp,
    Published,
    SourceRetired,
}

The durably persisted phases of one split (spec section 12.5). The executor resumes from the last persisted phase after a crash.

Variants

Started

The plan is formed and recorded; no meta-plane change yet.

MarkedSplitting

Step 1: the source is marked Splitting at g + 1.

ChildrenCreated

Steps 2-3: split key chosen; child descriptors and layouts created as Creating learners.

SnapshotPinned

Step 4: the source snapshot is pinned at split_ts.

ChildrenBuilt

Step 5: child state built from the pinned snapshot.

CaughtUp

Steps 6-7: source deltas streamed; the children are caught up, so the routing publication barrier is satisfied.

Published

Steps 8-9: children Active + source Retiring published atomically.

SourceRetired

Steps 10-11: the source is Retired and its replicas torn down. Terminal.

Implementations

impl SplitPhase

pub fn hook_name(self) -> Option<&'static str>

The fault hook fired after this phase’s progress record is durable (Started has none: it is the pre-work record). Hook names are registered in the mongreldb-fault catalog.

Trait Implementations

impl Clone for SplitPhase

fn clone(&self) -> SplitPhase

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SplitPhase

impl Debug for SplitPhase

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SplitPhase

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SplitPhase

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

Formats the value using the given formatter.

impl Eq for SplitPhase

impl Ord for SplitPhase

fn cmp(&self, other: &SplitPhase) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SplitPhase

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for SplitPhase

fn partial_cmp(&self, other: &SplitPhase) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for SplitPhase

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 SplitPhase