mapleFU commented on code in PR #197: URL: https://github.com/apache/parquet-format/pull/197#discussion_r1302631559
########## src/main/thrift/parquet.thrift: ########## @@ -974,6 +1050,13 @@ struct ColumnIndex { /** A list containing the number of null values for each page **/ 5: optional list<i64> null_counts + /** + * Repetition and definition level histograms for the pages. + * + * This contains some redundancy with null_counts, however, to accommodate the + * widest range of readers both should be populated. + **/ + 6: optional list<RepetitionDefinitionLevelHistogram> repetition_definition_level_histograms; Review Comment: Personally I don't think we need a uncompressed size in `OffsetIndex` or any `PageIndex`. If that, maybe a lots of `Statistics` like encoding, compression etc would all be a part of `OffsetIndex`, because once you want to estimate, encoding, compression will also matters. I think it's kind of changing `OffsetIndex` to `PageHeader` Group. So currently I'm -1 for this. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@parquet.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org