tustvold commented on code in PR #2464:
URL: https://github.com/apache/arrow-rs/pull/2464#discussion_r946982113


##########
parquet/src/file/writer.rs:
##########
@@ -1062,11 +1063,25 @@ mod tests {
             page_writer.close().unwrap();
         }
         {
+            let reader = bytes::Bytes::from(buffer);
+
+            let t = types::Type::primitive_type_builder("t", physical_type)
+                .build()
+                .unwrap();
+
+            let desc = ColumnDescriptor::new(Arc::new(t), 0, 0, 
ColumnPath::new(vec![]));

Review Comment:
   This is somewhat cumbersome, but I opted to take ColumnChunkMetadata in the 
constructor as it is more future-proof, not to mention slightly more obvious 
what the values are. In particular it avoids ambiguity over whether values 
includes nulls (it does).



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