Enum datafusion::physical_plan::Partitioning
source · [−]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
sourceimpl Partitioning
impl Partitioning
sourcepub fn partition_count(&self) -> usize
pub fn partition_count(&self) -> usize
Returns the number of partitions in this partitioning scheme
Trait Implementations
sourceimpl Clone for Partitioning
impl Clone for Partitioning
sourcefn clone(&self) -> Partitioning
fn clone(&self) -> Partitioning
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. 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
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more