tustvold commented on issue #3740:
URL: https://github.com/apache/arrow-rs/issues/3740#issuecomment-1441619053
> I couldn't think of a solution on how to keep buffer ownership while
writing with the usual Writer
Perhaps something like (not tested)
```
let mut buffer = Vec::with_capacity(1024);
while let Some(batch) = stream.next().await.transpose()? {
let writer = Writer::new(&mut buffer);
writer.write(&batch)?;
std::mem::drop(writer);
flush(&buffer).await?;
buffer.clear();
}
```
Whilst creating the `Writer` each time is perhaps a little unfortunate, I am
skeptical it will be relevant when amortised over the cost of encoding an
entire batch - CSV encoding is very expensive.
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