pub fn run(
lf: LazyFrame,
request: &ExportRequest,
polars_streaming: bool,
written: impl FnMut(u64) + Send + 'static,
) -> Result<()>Expand description
Run an export: plan lf as the format needs (ExportFormat::prepare),
write it to the request’s path by its Route, and commit. written hears
the bytes written so far: 0 as the write starts, then a few times a second.
The destination changes only if every byte was written.