liukun4515 commented on code in PR #1935:
URL: https://github.com/apache/arrow-rs/pull/1935#discussion_r908068776
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parquet/src/file/writer.rs:
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@@ -339,11 +400,11 @@ impl<'a, W: Write> SerializedRowGroupWriter<'a, W> {
.set_num_rows(self.total_rows_written.unwrap_or(0) as i64)
.build()?;
- let metadata = Arc::new(row_group_metadata);
- self.row_group_metadata = Some(metadata.clone());
+ let clone_row_group_metadata = row_group_metadata.clone();
+ self.row_group_metadata = Some(Arc::new(row_group_metadata));
Review Comment:
It's is not a good practice, we can optimize it by using the Mutex with Arc
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