emkornfield commented on code in PR #197: URL: https://github.com/apache/parquet-format/pull/197#discussion_r1320231941
########## src/main/thrift/parquet.thrift: ########## @@ -977,6 +1038,25 @@ struct ColumnIndex { /** A list containing the number of null values for each page **/ 5: optional list<i64> null_counts + + /** + * Contains repetition level histograms for more details) for each page + * concatenated together. The repetition_level_histogram field on + * SizeStatistics contains more details. + * + * When present the length should always be (number of pages * + * (max_repetition_level + 1)) elements in size. + * + * Element 0 is the first element of the histogram for the first page. + * Element (max_repetition_level + 1) is the first element of the histogram + * for the second page. Review Comment: I'm listing an option, I agree there is tension between size estimation use-case and filtering use-case, it really depends what we want to favor (the plus side of favoring size estimation is it a more obvious representation). -- 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