liurenjie1024 commented on code in PR #4636:
URL: https://github.com/apache/arrow-rs/pull/4636#discussion_r1284489405
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parquet/src/file/metadata.rs:
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@@ -277,6 +277,9 @@ pub struct RowGroupMetaData {
sorting_columns: Option<Vec<SortingColumn>>,
total_byte_size: i64,
schema_descr: SchemaDescPtr,
+ // We can't infer from file offset of first column since there may empty
columns in row group.
Review Comment:
Hmm, I think it safer to use unsigned value for in memory representation?
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