datafusion_physical_plan::coalesce

Enum CoalescerState

Source 
pub enum CoalescerState {
    Continue,
    LimitReached,
    TargetReached,
}
Expand description

Indicates the state of the BatchCoalescer buffer after the BatchCoalescer::push_batch() operation.

The caller should take diferent actions, depending on the variant returned.

Variants§

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Continue

Neither the limit nor the target batch size is reached.

Action: continue pushing batches.

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LimitReached

The limit has been reached.

Action: call BatchCoalescer::finish_batch() to get the final buffered results as a batch and finish the query.

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TargetReached

The specified minimum number of rows a batch should have is reached.

Action: call BatchCoalescer::finish_batch() to get the current buffered results as a batch and then continue pushing batches.

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