Enum datafusion::physical_plan::Partitioning

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pub enum Partitioning {
    RoundRobinBatch(usize),
    Hash(Vec<Arc<dyn PhysicalExpr>>, usize),
    UnknownPartitioning(usize),
}

Expand description

Partitioning schemes supported by operators.

Variants

`RoundRobinBatch(usize)`

Allocate batches using a round-robin algorithm and the specified number of partitions

`Hash(Vec<Arc<dyn PhysicalExpr>>, usize)`

Allocate rows based on a hash of one of more expressions and the specified number of partitions

`UnknownPartitioning(usize)`

Unknown partitioning scheme with a known number of partitions

Implementations

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impl Partitioning

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pub fn partition_count(&self) -> usize

Returns the number of partitions in this partitioning scheme

Trait Implementations

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impl Clone for Partitioning

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fn clone(&self) -> Partitioning

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl Debug for Partitioning

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl !RefUnwindSafe for Partitioning

impl Send for Partitioning

impl Sync for Partitioning

impl Unpin for Partitioning

impl !UnwindSafe for Partitioning

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

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

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impl<T> Same<T> for T

type Output = T

Should always be Self

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

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

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

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

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Enum datafusion::physical_plan::Partitioning

Variants

RoundRobinBatch(usize)

Hash(Vec<Arc<dyn PhysicalExpr>>, usize)

UnknownPartitioning(usize)

Implementations

impl Partitioning

pub fn partition_count(&self) -> usize

Trait Implementations

impl Clone for Partitioning

fn clone(&self) -> Partitioning

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

impl Debug for Partitioning

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

Auto Trait Implementations

impl !RefUnwindSafe for Partitioning

impl Send for Partitioning

impl Sync for Partitioning

impl Unpin for Partitioning

impl !UnwindSafe for Partitioning

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

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

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

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

fn vzip(self) -> V

`RoundRobinBatch(usize)`

`Hash(Vec<Arc<dyn PhysicalExpr>>, usize)`

`UnknownPartitioning(usize)`

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

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

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

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

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

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

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

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