Enum RollbackError 

pub enum RollbackError {
    WatermarkViolation {
        common_point: u64,
        commit_watermark: u64,
    },
    TailPersistFailed {
        reason: String,
    },
    RecoverFailed {
        target_lsn: u64,
        reason: String,
    },
}

Why an auto-rollback could not complete.

Variants

WatermarkViolation

The common point is below the commit watermark, so recovering to it would roll back committed data. Refused — nothing was changed. This should never happen given the election vote rule (ADR 0030); if it does, the cluster has a deeper consistency fault that needs an operator, not a silent data loss.

Fields

common_point: u64

commit_watermark: u64

TailPersistFailed

The divergent tail could not be persisted to a rollback file. Recovery aborted before removing anything: rollback is never silent, so if the tail cannot be preserved it is not discarded.

Fields

reason: String

RecoverFailed

The recover-to-LSN over the MVCC history store failed. The tail was already preserved to a rollback file, but the live timeline was not rolled back; the node must not rejoin until an operator resolves it.

Fields

target_lsn: u64

reason: String

Trait Implementations

impl Clone for RollbackError

fn clone(&self) -> RollbackError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RollbackError

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

Formats the value using the given formatter.

impl Display for RollbackError

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

Formats the value using the given formatter.

impl Eq for RollbackError

impl Error for RollbackError

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 RollbackError

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