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https://issues.apache.org/jira/browse/ARROW-8796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jorge Leitão resolved ARROW-8796.
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Resolution: Fixed
> [Rust] Allow parquet to be written directly to memory
> -----------------------------------------------------
>
> Key: ARROW-8796
> URL: https://issues.apache.org/jira/browse/ARROW-8796
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust
> Reporter: Markus Westerlind
> Priority: Minor
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 4h
> Remaining Estimate: 0h
>
> The `TryClone` bound currently needed in `ParquetWriter` makes it awkward to
> write parquet to memory, forcing either a `Rc` + `RefCell` wrapper or to
> write to a `File` first.
> By explictly threading lifetimes around the underlying writer can be passed
> mutably through all parts of the writer, allowing `&mut Vec<u8>` or any other
> implementors of the basic io traits to be used directly.
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