viirya commented on PR #58050: URL: https://github.com/apache/spark/pull/58050#issuecomment-5332540933
Thanks @qlong! Added the "sort + many row groups per file" tuning guidance to the config's doc string in 4bacd69, framed as the general Parquet min/max dependence: it helps most when the data is sorted on the filtered field (so each row group covers a narrow value range) and a file holds many row groups, and gains little on unsorted data or a single row group per file. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
