jhorstmann commented on code in PR #8312:
URL: https://github.com/apache/arrow-rs/pull/8312#discussion_r2340540486
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parquet/src/schema/types.rs:
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@@ -1006,6 +1006,9 @@ pub struct SchemaDescriptor {
/// -- -- -- -- d
/// ```
leaf_to_base: Vec<usize>,
+
+ /// Mapping between the column dotstring path to the leaf index.
+ leaf_to_idx: HashMap<String, usize>,
Review Comment:
I feel that if this map is needed, it should use `ColumnPath` as a key. As
far as I know there is nothing preventing a field name to contain embedded
dots, so the string representation might not be deterministic.
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