Enum datafusion::prelude::Partitioning
source · pub enum Partitioning {
RoundRobinBatch(usize),
Hash(Vec<Expr>, usize),
DistributeBy(Vec<Expr>),
}
Expand description
Logical partitioning schemes supported by the repartition operator.
Variants§
RoundRobinBatch(usize)
Allocate batches using a round-robin algorithm and the specified number of partitions
Hash(Vec<Expr>, usize)
Allocate rows based on a hash of one of more expressions and the specified number of partitions.
DistributeBy(Vec<Expr>)
The DISTRIBUTE BY clause is used to repartition the data based on the input expressions
Trait Implementations§
source§impl Clone for Partitioning
impl Clone for Partitioning
source§fn clone(&self) -> Partitioning
fn clone(&self) -> Partitioning
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for Partitioning
impl Debug for Partitioning
source§impl Hash for Partitioning
impl Hash for Partitioning
source§impl PartialEq for Partitioning
impl PartialEq for Partitioning
source§fn eq(&self, other: &Partitioning) -> bool
fn eq(&self, other: &Partitioning) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl Eq for Partitioning
impl StructuralPartialEq for Partitioning
Auto Trait Implementations§
impl Freeze for Partitioning
impl !RefUnwindSafe for Partitioning
impl Send for Partitioning
impl Sync for Partitioning
impl Unpin for Partitioning
impl !UnwindSafe for Partitioning
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more