Enum MoveError 

pub enum MoveError {
    UnknownRange {
        collection: CollectionId,
        range_id: RangeId,
    },
    TargetIsOwner {
        collection: CollectionId,
        range_id: RangeId,
        owner: NodeIdentity,
    },
    WrongPhase {
        expected: &'static str,
        actual: MovePhase,
    },
    TargetBehindWatermark {
        collection: CollectionId,
        range_id: RangeId,
        target: NodeIdentity,
        watermark: CommitWatermark,
        applied_term: u64,
        applied_lsn: u64,
    },
    Catalog(CatalogError),
    Transition(TransitionError),
}

Why a move-range step failed. Every variant that can be returned before the fenced handoff leaves the catalog untouched.

Variants

UnknownRange

No range with this (collection, range_id) exists in the catalog.

Fields

collection: CollectionId

range_id: RangeId

TargetIsOwner

The move target is already the range’s owner — a no-op move.

Fields

collection: CollectionId

range_id: RangeId

owner: NodeIdentity

WrongPhase

A move step was attempted from the wrong phase (e.g. cutting over before a snapshot was installed).

Fields

expected: &'static str

actual: MovePhase

TargetBehindWatermark

Cutover was attempted but the target’s applied log does not yet cover the live commit watermark — refused, the catalog untouched.

Fields

collection: CollectionId

range_id: RangeId

target: NodeIdentity

watermark: CommitWatermark

applied_term: u64

applied_lsn: u64

Catalog(CatalogError)

A catalog write (replica enlistment) was rejected.

Transition(TransitionError)

The fenced handoff transition was rejected (a CAS or safety failure) or the activation write failed.

Trait Implementations

impl Clone for MoveError

fn clone(&self) -> MoveError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MoveError

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

Formats the value using the given formatter.

impl Display for MoveError

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

Formats the value using the given formatter.

impl Eq for MoveError

impl Error for MoveError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for MoveError

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