mapleFU commented on code in PR #8264:
URL: https://github.com/apache/arrow-rs/pull/8264#discussion_r2323926317


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parquet/src/file/writer.rs:
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@@ -966,7 +966,19 @@ impl<W: Write + Send> PageWriter for 
SerializedPageWriter<'_, W> {
         let mut spec = PageWriteSpec::new();
         spec.page_type = page_type;
         spec.uncompressed_size = page.uncompressed_size() + header_size;
+        if spec.uncompressed_size > i32::MAX as usize {

Review Comment:
   This is a "final around" before writing. Before `uncompressed_size` is using 
usize. I thinked about checking it when building `spec` but I don't know would 
it be too heavy ( or forcing )



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