Xuanwo commented on issue #6327:
URL: https://github.com/apache/arrow-rs/issues/6327#issuecomment-2317522451

   Understood. I believe you need `AsyncArrowWriter::into_inner`.
   
   ---
   
   First of all, allowing users to manipulate the writer after 
`AsyncArrowWriter` has written the header and data could be error-prone.
   
   Additionally, it doesn't make sense given our context could involve S3, 
Azure Blob, or GCS storage services. In these contexts, the file doesn't exist 
before `close` has been called, so you can't perform `seek`/`read` or other 
actions.
   
   If you simply want to use this API in the local filesystem context, would 
you consider using 
[`try_clone`](https://docs.rs/tokio/latest/tokio/fs/struct.File.html#method.try_clone)
 instead?


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