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ConsolidatingBatcher

mz_timely_util::operator

Struct ConsolidatingBatcher 

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pub struct ConsolidatingBatcher<Chu, M: Extractor> { /* private fields */ }
Expand description

Accumulates updates into sorted, consolidated chains, and releases what a frontier unblocks.

This is the Batcher a consolidation wants. Differential’s own MergeBatcher seals each extracted chain into a trace batch, which a caller that only needs the updates consolidated would immediately have to take apart again; this one hands the chain over as it is.

Chu melds raw input containers into sorted, consolidated chunks, and M merges those chunks and splits them by time. The chains live in differential’s MergeLadder, and the batcher’s own work is the carve-by-frontier, mirroring MergeBatcher’s.

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impl<Chu: Default, M: Extractor<Time: Timestamp>> ConsolidatingBatcher<Chu, M>

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pub fn new(logger: Option<Logger>, operator_id: usize) -> Self

Allocates a new empty batcher.

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impl<Chu, M: Extractor> ConsolidatingBatcher<Chu, M>

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pub fn push_chunk(&mut self, chunk: M::Chunk)

Insert one already sorted and consolidated chunk, bypassing the chunker.

The ladder assumes each chunk it holds is sorted and consolidated, so a caller that prepared the chunk itself uses this; everything else goes through Batcher::insert.

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impl<C, Chu, M> Batcher<C> for ConsolidatingBatcher<Chu, M>
where M: Extractor<Time: Timestamp>, Chu: ContainerBuilder<Container = M::Chunk> + for<'a> PushInto<&'a mut C>,

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fn insert(&mut self, container: &mut C)

Takes the updates in container, leaving it in an undefined state. Read more
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impl<Chu: Default, M: Extractor<Time: Timestamp>> BatcherNew for ConsolidatingBatcher<Chu, M>

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fn new_batcher(logger: Option<Logger>, operator_id: usize) -> Self

Allocates an empty batcher, reporting its footprint against operator_id.
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impl<Chu, M> Extract for ConsolidatingBatcher<Chu, M>
where M: Extractor<Time: Timestamp>, Chu: ContainerBuilder<Container = M::Chunk>,

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type Time = <M as Extractor>::Time

The timestamps by which updates are carved out.
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type Output = Vec<<M as Merger>::Chunk>

The batches released by extraction.
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fn extract<'a>( &'a mut self, upper: AntichainRef<'_, M::Time>, ) -> (Option<Self::Output>, AntichainRef<'a, M::Time>)

Extracts the updates upper unblocks as a batch, and lower bounds the times of those retained. Read more

Auto Trait Implementations§

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impl<Chu, M> !RefUnwindSafe for ConsolidatingBatcher<Chu, M>

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impl<Chu, M> !Send for ConsolidatingBatcher<Chu, M>

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impl<Chu, M> !Sync for ConsolidatingBatcher<Chu, M>

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impl<Chu, M> !UnwindSafe for ConsolidatingBatcher<Chu, M>

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impl<Chu, M> Freeze for ConsolidatingBatcher<Chu, M>
where Chu: Freeze, MergeLadder<M>: Freeze, M: Freeze, Vec<<M as Merger>::Chunk>: Freeze, Antichain<<M as Extractor>::Time>: Freeze,

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impl<Chu, M> Unpin for ConsolidatingBatcher<Chu, M>
where Chu: Unpin, MergeLadder<M>: Unpin, M: Unpin, Vec<<M as Merger>::Chunk>: Unpin, Antichain<<M as Extractor>::Time>: Unpin,

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impl<Chu, M> UnsafeUnpin for ConsolidatingBatcher<Chu, M>
where Chu: UnsafeUnpin, MergeLadder<M>: UnsafeUnpin, M: UnsafeUnpin, Vec<<M as Merger>::Chunk>: UnsafeUnpin, Antichain<<M as Extractor>::Time>: UnsafeUnpin,

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