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ColumnarPage

faucet_stream::columnar

Struct ColumnarPage 

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pub struct ColumnarPage {
    pub batch: RecordBatch,
    pub bookmark: Option<Value>,
}
Available on crate feature arrow only.
Expand description

A page of records in columnar (Arrow) form, the columnar analogue of StreamPage.

bookmark carries the exact same checkpoint semantics as StreamPage: Some triggers flush + bookmark-persist after the batch is durably written; most sources emit Some only on the final batch, CDC-style sources per committed transaction.

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§batch: RecordBatch

The record batch to write to the sink for this page.

§bookmark: Option<Value>

Optional bookmark to checkpoint after this batch is durably written.

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impl ColumnarPage

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pub fn new(batch: RecordBatch, bookmark: Option<Value>) -> ColumnarPage

Construct a columnar page from a batch and optional bookmark.

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pub fn num_rows(&self) -> usize

Number of rows in the batch.

Trait Implementations§

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impl Clone for ColumnarPage

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fn clone(&self) -> ColumnarPage

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ColumnarPage

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

Formats the value using the given formatter. Read more

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