Struct lance_index::optimize::OptimizeOptions

source ·

pub struct OptimizeOptions {
    pub num_indices_to_merge: usize,
}

Expand description

Options for optimizing all indices.

Fields§

§num_indices_to_merge: usize

Number of delta indices to merge for one column. Default: 1.

If num_indices_to_merge is 0, a new delta index will be created. If num_indices_to_merge is 1, the delta updates will be merged into the latest index. If num_indices_to_merge is more than 1, the delta updates and latest N indices will be merged into one single index.

It is up to the caller to decide how many indices to merge / keep. Callers can find out how many indices are there by calling [Dataset::index_statistics].

A common usage pattern will be that, the caller can keep a large snapshot of the index of the base version, and accumulate a few delta indices, then merge them into the snapshot.

Struct lance_index::optimize::OptimizeOptionsCopy item path

Fields§

Trait Implementations§

impl Debug for OptimizeOptions

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

impl Default for OptimizeOptions

fn default() -> Self

Auto Trait Implementations§

impl Freeze for OptimizeOptions

impl RefUnwindSafe for OptimizeOptions

impl Send for OptimizeOptions

impl Sync for OptimizeOptions

impl Unpin for OptimizeOptions

impl UnwindSafe for OptimizeOptions

Blanket Implementations§

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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impl<T> From<T> for T

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fn into(self) -> U

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fn into_either(self, into_left: bool) -> Either<Self, Self>

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

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type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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impl<T> Same for T

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

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

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

impl<T> Allocation for Twhere T: RefUnwindSafe + Send + Sync,

Struct lance_index::optimize::OptimizeOptions

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>,

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

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>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,