ArrowWriter

orc_rust::arrow_writer

Struct ArrowWriter 

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pub struct ArrowWriter<W> { /* private fields */ }
Expand description

Encodes RecordBatches into an ORC file. Will encode batch_size rows at a time into a stripe, flushing the stripe to the underlying writer when it’s estimated memory footprint exceeds the configures stripe_byte_size.

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impl<W: Write> ArrowWriter<W>

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pub fn write(&mut self, batch: &RecordBatch) -> Result<()>

Encode the provided batch at batch_size rows at a time, flushing any stripes that exceed the configured stripe size.

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pub fn flush_stripe(&mut self) -> Result<()>

Flush any buffered data that hasn’t been written, and write the stripe footer metadata.

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pub fn close(self) -> Result<()>

Flush the current stripe if it is still in progress, and write the tail metadata and close the writer.

Auto Trait Implementations§

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impl<W> Freeze for ArrowWriter<W>
where W: Freeze,

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impl<W> !RefUnwindSafe for ArrowWriter<W>

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impl<W> !Send for ArrowWriter<W>

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impl<W> !Sync for ArrowWriter<W>

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impl<W> Unpin for ArrowWriter<W>
where W: Unpin,

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impl<W> !UnwindSafe for ArrowWriter<W>

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impl<T> Any for T
where T: 'static + ?Sized,

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where T: ?Sized,

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impl<T> BorrowMut<T> for T
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impl<T> From<T> for T

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type Output = T

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type Error = <U as TryFrom<T>>::Error

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