Enum ShardExpansionError 

pub enum ShardExpansionError {
    CannotShrink {
        current: u32,
        requested: u32,
    },
    ExceedsMax {
        requested: u32,
    },
    NotMultiRaft,
    StableRoutingActive,
}

Why a shard-count expansion request was rejected.

Variants

CannotShrink

new_count must be strictly greater than the current count.

Fields

current: u32

Current active shard count.

requested: u32

Requested count.

ExceedsMax

new_count exceeds MAX_VIRTUAL_SHARDS.

Fields

requested: u32

Requested count.

NotMultiRaft

Keyed routing / expansion requires multi-Raft (raft_groups > 1).

StableRoutingActive

Stable virtual routing is active — use StableShardRouter::activate_shards.

Trait Implementations

impl Clone for ShardExpansionError

fn clone(&self) -> ShardExpansionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ShardExpansionError

impl Debug for ShardExpansionError

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

Formats the value using the given formatter.

impl Display for ShardExpansionError

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

Formats the value using the given formatter.

impl Eq for ShardExpansionError

impl Error for ShardExpansionError

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 ShardExpansionError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ShardExpansionError