mapleFU commented on code in PR #6042:
URL: https://github.com/apache/arrow-rs/pull/6042#discussion_r1673837921
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parquet/src/file/metadata/mod.rs:
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@@ -942,14 +950,19 @@ impl ColumnChunkMetaDataBuilder {
}
}
-/// Builder for column index
+/// Builder for Parquet [`ColumnIndex`], part of the Parquet [PageIndex]
+///
+/// [PageIndex]:
https://github.com/apache/parquet-format/blob/master/PageIndex.md
pub struct ColumnIndexBuilder {
null_pages: Vec<bool>,
min_values: Vec<Vec<u8>>,
max_values: Vec<Vec<u8>>,
null_counts: Vec<i64>,
boundary_order: BoundaryOrder,
- // If one page can't get build index, need to ignore all index in this
column
+ /// Is the information in the builder valid?
+ ///
+ /// Set to `false` if any entry in the page doesn't have statistics for
+ /// some reason
Review Comment:
The reason can be document some example here, like
https://github.com/apache/parquet-format/pull/196 ?
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