Enum DispatchError 

pub enum DispatchError {
    SequenceOverflow,
    Authority(AuthorityError),
    ScheduledPromotion(AuthorityPromotionError<AuthorityError>),
    RetryPromotion(RunInstanceError),
    Derivation(DerivationError),
    SnapshotBuild(SnapshotMappingError),
    SnapshotWrite(SnapshotWriterError),
    SnapshotInit(String),
    StateInconsistency {
        run_id: RunId,
        context: String,
    },
    InvalidBackoffConfig,
    DependencyCycle(CycleError),
    RetryDecision(RetryDecisionError),
    SubmissionRejected {
        task_id: TaskId,
        context: String,
    },
}

Errors that can occur during dispatch.

Variants

SequenceOverflow

WAL sequence counter overflow.

Authority(AuthorityError)

A mutation command submitted to the storage authority failed.

ScheduledPromotion(AuthorityPromotionError<AuthorityError>)

Scheduled-to-ready promotion via authority failed.

RetryPromotion(RunInstanceError)

RetryWait-to-ready promotion failed due to an invalid state transition.

Derivation(DerivationError)

Run derivation from a task’s run policy failed.

SnapshotBuild(SnapshotMappingError)

Snapshot build from projection failed.

SnapshotWrite(SnapshotWriterError)

Snapshot I/O failed during write or close.

SnapshotInit(String)

Snapshot writer initialization failed.

StateInconsistency

Internal state inconsistency (e.g., task not found after run transition).

Fields

run_id: RunId

Run that triggered the inconsistency.

context: String

Human-readable context for diagnostics.

InvalidBackoffConfig

Backoff strategy configuration is invalid (e.g., base exceeds max).

DependencyCycle(CycleError)

Dependency declaration would introduce a cycle in the task DAG.

RetryDecision(RetryDecisionError)

Retry decision from attempt outcome violated retry invariants.

SubmissionRejected

A dynamically submitted task was rejected (parent not found or terminal).

Fields

task_id: TaskId

Task that was rejected.

context: String

Human-readable reason for rejection.

Trait Implementations

impl Debug for DispatchError

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

Formats the value using the given formatter.

impl Display for DispatchError

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

Formats the value using the given formatter.

impl Error for DispatchError

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 From<DispatchError> for EngineError

fn from(e: DispatchError) -> Self

Converts to this type from the input type.