iceberg::writer::file_writer::rolling_writer

Struct RollingFileWriter

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

A writer that automatically rolls over to a new file when the data size exceeds a target threshold.

This writer wraps another file writer that tracks the amount of data written. When the data size exceeds the target size, it closes the current file and starts writing to a new one.

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impl<B: FileWriterBuilder> CurrentFileStatus for RollingFileWriter<B>

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fn current_file_path(&self) -> String

Get the current file path.
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fn current_row_num(&self) -> usize

Get the current file row number.
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fn current_written_size(&self) -> usize

Get the current file written size.
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fn current_schema(&self) -> SchemaRef

Get the current schema used by the writer.
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impl<B: FileWriterBuilder> FileWriter for RollingFileWriter<B>

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async fn write(&mut self, input: &RecordBatch) -> Result<()>

Write record batch to file.
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async fn close(self) -> Result<Vec<DataFileBuilder>>

Close file writer.

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