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MorselOutput

vortex_scan::planning::morsel

Enum MorselOutput 

Source 
pub enum MorselOutput {
    Done,
    Continue,
    NeedsIO(IoBatch),
    Batch(ArrayRef),
}
Expand description

What one morsel compute() produced.

A Batch is never empty; a morsel that finds no rows returns Done. Returning NeedsIO registers the batch immediately, and each request in it exactly once; the next state() determines whether the morsel waits. Optional requests need no delivery. After Done the morsel is dropped without further calls.

Variants§

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Done

The morsel has finished.

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Continue

A CPU-only checkpoint; the driver requeues the morsel.

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NeedsIO(IoBatch)

Requests the morsel publishes: fetches it needs, and optional hints.

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Batch(ArrayRef)

One non-empty array of selected rows, in input-row order.

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impl Debug for MorselOutput

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

Formats the value using the given formatter. Read more

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where Self: UpperHex,

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