etseidl commented on code in PR #7307:
URL: https://github.com/apache/arrow-rs/pull/7307#discussion_r2043160346
##########
parquet/src/file/metadata/reader.rs:
##########
@@ -767,13 +767,17 @@ impl ParquetMetaDataReader {
file_decryptor = Some(get_file_decryptor(algo,
file_decryption_properties)?);
}
+ let mut first_row_number = 0;
let mut row_groups = Vec::new();
+ t_file_metadata.row_groups.sort_by_key(|rg| rg.ordinal);
Review Comment:
Are these sorts necessary? Would the ordinal ever be out of order? They
shouldn't be if I understand the [encryption
spec](https://github.com/apache/parquet-format/blob/master/Encryption.md#52-crypto-structures)
correctly.
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