JFinis commented on code in PR #197: URL: https://github.com/apache/parquet-format/pull/197#discussion_r1318292827
########## src/main/thrift/parquet.thrift: ########## @@ -977,6 +1073,15 @@ 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 when either the max + * definition and repetition level meet the requirements specified in + * RepetitionDefinitionLevelHistogram. + **/ + 6: optional list<RepetitionDefinitionLevelHistogram> repetition_definition_level_histograms Review Comment: @emkornfield If we do break up the struct in the `ColumnIndex`, I would actually suggest to get rid of the struct completely for the following reasons: * We also don't have a struct for other things in `Statistics` that belong somewhat together, e.g., we don't have a struct for min and max. * The struct being optional in `Statistics` and then both lists again being optional in it creates two layers of optionals without clear semantics. I would argue that there should only be one level of optional. -- 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