alamb commented on issue #5770: URL: https://github.com/apache/arrow-rs/issues/5770#issuecomment-2114618646
> At my use case, usally row-group would be limit by size rather than row-count, and we would disable statistics for most of these column. And only write page index without column index in this case Yes, this is what I would expect best practice to be for large schemas (especially if the actual data is sparse as @westonpace says). In general I would expect the value for query engines of min/max statistics in parquet metadata to be quite low for columns where the data isn't sorted or clustered in some way. Thus, if the default parquet writer settings always write this metadata for all columns maybe we need to adjust the default and docuemntation or something -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
