Struct ParallelExecutor

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pub struct ParallelExecutor { /* private fields */ }

Expand description

Parallel executor.

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impl ParallelExecutor

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pub fn new(config: ParallelConfig) -> Self

Create a new parallel executor.

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pub fn execute_parallel<F>( &self, batches: Vec<RecordBatch>, func: F, ) -> Result<Vec<RecordBatch>>
where F: Fn(&RecordBatch) -> Result<RecordBatch> + Send + Sync,

Execute a function on batches in parallel.

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pub fn partition_batches( &self, batches: Vec<RecordBatch>, num_partitions: usize, ) -> Vec<Vec<RecordBatch>>

Partition batches for parallel processing.

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pub fn merge_batches( &self, batches: Vec<RecordBatch>, order_by: Option<&[OrderByExpr]>, ) -> Result<Vec<RecordBatch>>

Merge results from parallel execution.

If order_by is provided, performs k-way merge assuming input batches are already sorted. Otherwise, simply concatenates the batches.

Auto Trait Implementations§

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impl UnwindSafe for ParallelExecutor

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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,

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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,

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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> IntoEither for T

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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 more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

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

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