Xuanwo commented on code in PR #176:
URL: https://github.com/apache/iceberg-rust/pull/176#discussion_r1470721802

##########
crates/iceberg/src/io.rs:
##########
@@ -278,7 +288,7 @@ impl OutputFile {
     }
 
     /// Creates output file for writing.
-    pub async fn writer(&self) -> Result<impl FileWrite> {
+    pub async fn writer(&self) -> Result<Writer> {
         Ok(self.op.writer(&self.path[self.relative_path_pos..]).await?)

Review Comment:
   > I find that the `AsyncArrowWriter` already provides the [write with a 
buffer](https://docs.rs/parquet/latest/parquet/arrow/async_writer/struct.AsyncArrowWriter.html#method.write).
 In this case, maybe we can use this buffer.
   
   Thanks for pointing out! Seems `AsyncArrowWriter` has it own internal 
buffer, so we don't need to double buffer it anymore.



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