PartitionStats

kotoba_db_cluster::partitioning

Struct PartitionStats

pub struct PartitionStats {
    pub total_partitions: usize,
    pub total_nodes: usize,
    pub node_partition_counts: HashMap<NodeId, usize>,
    pub partition_replica_counts: HashMap<PartitionId, usize>,
}

Expand description

Statistics about partition distribution

Fields§

§total_partitions: usize§total_nodes: usize§node_partition_counts: HashMap<NodeId, usize>§partition_replica_counts: HashMap<PartitionId, usize>

Implementations§

impl PartitionStats

pub fn most_loaded_node(&self) -> Option<(&NodeId, usize)>

Get the most loaded node

pub fn least_loaded_node(&self) -> Option<(&NodeId, usize)>

Get the least loaded node

pub fn variance(&self) -> f64

Calculate distribution variance

Trait Implementations§

impl Clone for PartitionStats

fn clone(&self) -> PartitionStats

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for PartitionStats

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl Freeze for PartitionStats

impl RefUnwindSafe for PartitionStats

impl Send for PartitionStats

impl Sync for PartitionStats

impl Unpin for PartitionStats

impl UnwindSafe for PartitionStats

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V