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https://issues.apache.org/jira/browse/ARROW-11279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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R J updated ARROW-11279:
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Summary: [Rust][Parquet] ArrowWriter Definition Levels Memory Usage (was:
[Rust][Parquet])
> [Rust][Parquet] ArrowWriter Definition Levels Memory Usage
> ----------------------------------------------------------
>
> Key: ARROW-11279
> URL: https://issues.apache.org/jira/browse/ARROW-11279
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust
> Reporter: R J
> Priority: Minor
> Original Estimate: 0.25h
> Remaining Estimate: 0.25h
>
> In the rust implementation of an Arrow RecordBatch writer to parquet
> (3.0.0-SNAPSHOT), the ArrowWriter::write call potentially allocates more
> memory than required.
> For a RecordBatch with m rows and n columns, ArrowWriter::write allocates m*n
> definition levels, leading to m times the required memory usage.
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