tustvold commented on code in PR #2012:
URL: https://github.com/apache/arrow-rs/pull/2012#discussion_r916718724
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parquet/src/file/page_index/index.rs:
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@@ -56,6 +56,10 @@ pub enum Index {
DOUBLE(NativeIndex<f64>),
BYTE_ARRAY(ByteArrayIndex),
FIXED_LEN_BYTE_ARRAY(ByteArrayIndex),
+ /// Sometimes reading page index from parquet file
+ /// will only return pageLocations without min_max index,
+ /// Use `EMPTY_ARRAY` representing None will be more convenient.
Review Comment:
```suggestion
/// `None` represents this lack of index information
```
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