maropu commented on pull request #28804: URL: https://github.com/apache/spark/pull/28804#issuecomment-646974298
> When the cardinality of grouping column is close to the total number of records being processed Ur, one more question; how do we know that the cardinality is close the #records being processed when processing aggregates? ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
