Struct mz_compute::render::join::mz_join_core::Deferred

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struct Deferred<T, C1, C2, D>
where T: Timestamp, C1: Cursor<Time = T, Diff = Diff>, C2: for<'a> Cursor<Key<'a> = C1::Key<'a>, Time = T, Diff = Diff>,
{ cursor1: C1, storage1: C1::Storage, cursor2: C2, storage2: C2::Storage, capability: Capability<T>, done: bool, temp: Vec<(D, T, Diff)>, }
Expand description

Deferred join computation.

The structure wraps cursors which allow us to play out join computation at whatever rate we like. This allows us to avoid producing and buffering massive amounts of data, without giving the timely dataflow system a chance to run operators that can consume and aggregate the data.

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§cursor1: C1§storage1: C1::Storage§cursor2: C2§storage2: C2::Storage§capability: Capability<T>§done: bool§temp: Vec<(D, T, Diff)>

Implementations§

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impl<T, C1, C2, D> Deferred<T, C1, C2, D>
where T: Timestamp + Lattice, C1: Cursor<Time = T, Diff = Diff>, C2: for<'a> Cursor<Key<'a> = C1::Key<'a>, Time = T, Diff = Diff>, D: Data,

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fn new( cursor1: C1, storage1: C1::Storage, cursor2: C2, storage2: C2::Storage, capability: Capability<T>, ) -> Self

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fn work_remains(&self) -> bool

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fn work<L, I, YFn, C>( &mut self, output: &mut OutputHandleCore<'_, T, CapacityContainerBuilder<C>, Tee<T, C>>, logic: L, yield_fn: YFn, work: &mut usize, )
where I: IntoIterator<Item = D>, L: FnMut(C1::Key<'_>, C1::Val<'_>, C2::Val<'_>) -> I, YFn: Fn(usize) -> bool, C: SizableContainer + PushInto<(D, T, Diff)>,

Process keys until at least fuel output tuples produced, or the work is exhausted.

Auto Trait Implementations§

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impl<T, C1, C2, D> Freeze for Deferred<T, C1, C2, D>
where C1: Freeze, <C1 as Cursor>::Storage: Freeze, C2: Freeze, <C2 as Cursor>::Storage: Freeze, T: Freeze,

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impl<T, C1, C2, D> !RefUnwindSafe for Deferred<T, C1, C2, D>

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impl<T, C1, C2, D> !Send for Deferred<T, C1, C2, D>

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impl<T, C1, C2, D> !Sync for Deferred<T, C1, C2, D>

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impl<T, C1, C2, D> Unpin for Deferred<T, C1, C2, D>
where C1: Unpin, <C1 as Cursor>::Storage: Unpin, C2: Unpin, <C2 as Cursor>::Storage: Unpin, T: Unpin, D: Unpin,

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impl<T, C1, C2, D> !UnwindSafe for Deferred<T, C1, C2, D>

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