iceberg::writer::file_writer::rolling_writer

Struct RollingFileWriterBuilder

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pub struct RollingFileWriterBuilder<B: FileWriterBuilder> { /* private fields */ }
Expand description

Builder for creating a RollingFileWriter that rolls over to a new file when the data size exceeds a target threshold.

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impl<B: FileWriterBuilder> RollingFileWriterBuilder<B>

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pub fn new(inner_builder: B, target_file_size: usize) -> Self

Creates a new RollingFileWriterBuilder with the specified inner builder and target size.

§Arguments
  • inner_builder - The builder for the underlying file writer
  • target_file_size - The target size in bytes before rolling over to a new file

NOTE: The target_file_size does not exactly reflect the final size on physical storage. This is because the input size is based on the Arrow in-memory format and cannot precisely control rollover behavior. The actual file size on disk is expected to be slightly larger than target_file_size.

Trait Implementations§

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impl<B: Clone + FileWriterBuilder> Clone for RollingFileWriterBuilder<B>

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fn clone(&self) -> RollingFileWriterBuilder<B>

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl<B: FileWriterBuilder> FileWriterBuilder for RollingFileWriterBuilder<B>

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type R = RollingFileWriter<B>

The associated file writer type.
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async fn build(self) -> Result<Self::R>

Build file writer.

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