WingsGo commented on pull request #3694: URL: https://github.com/apache/incubator-doris/pull/3694#issuecomment-634495845
Hi, @morningman I have some question about olap_scan_node, could you plz help me figure it out? 1. what's the relationship between scanner and tablet, one tablet can be scanned by many scanner?they are n:1 or 1:1? 2. what's the relationship between TPaloScanRange and ColumnValueRange, is ColumnValueRange to deal with predicate case and TPaloScanRange can indicate that the range a scanner need to scan from StorageEngine's prefix index? 3. What's the usage of function `extend_scan_key` and the config variable `doris_scanner_row_num`? I would appreciate your reply, thanks~ ---------------------------------------------------------------- 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]
