Xuanwo commented on code in PR #5835:
URL: https://github.com/apache/arrow-rs/pull/5835#discussion_r1633260989
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object_store/src/buffered.rs:
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@@ -400,6 +400,125 @@ impl AsyncWrite for BufWriter {
}
}
+/// A buffered multipart uploader.
+///
+/// This uploader adaptively uses [`ObjectStore::put`] or
+/// [`ObjectStore::put_multipart`] depending on the amount of data that has
+/// been written.
+///
+/// Up to `capacity` bytes will be buffered in memory, and flushed on shutdown
+/// using [`ObjectStore::put`]. If `capacity` is exceeded, data will instead be
+/// streamed using [`ObjectStore::put_multipart`]
+///
+/// # TODO
+///
+/// Add attributes and tags support.
+pub struct BufUploader {
+ store: Arc<dyn ObjectStore>,
+ path: Path,
+
+ chunk_size: usize,
+ max_concurrency: usize,
+
+ buffer: PutPayloadMut,
+ write_multipart: Option<WriteMultipart>,
+}
+
+impl std::fmt::Debug for BufUploader {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
Review Comment:
Thanks for pointing out. I will add more field and the comment to explain
why this is a manual impl.
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