delta/mariadb-git.git - github.com: MariaDB/server.git

	Commit message (Collapse)	Author	Age	Files	Lines
*	Removed double records_in_range calls from multi_range_read_info_const	Monty	2020-03-17	1	-5/+5
\| \| \| \| \| \| \| \| \| \| \| \| \| \|	This was to remove a performance regression between 10.3 and 10.4 In 10.5 we will have a better implementation of records_in_range that will enable us to get more statistics. This change was not done in 10.4 because the 10.5 will be part of a larger change that is not suitable for the GA 10.4 version Other things: - Changed default handler block_size to 8192 to fix things statistics for engines that doesn't set the block size. - Fixed a bug in spider when using multiple part const ranges (Patch from Kentoku)
*	MDEV-16188 Use in-memory PK filters built from range index scans	Igor Babaev	2019-02-03	1	-5/+5
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	This patch contains a full implementation of the optimization that allows to use in-memory rowid / primary filters built for range conditions over indexes. In many cases usage of such filters reduce the number of disk seeks spent for fetching table rows. In this implementation the choice of what possible filter to be applied (if any) is made purely on cost-based considerations. This implementation re-achitectured the partial implementation of the feature pushed by Galina Shalygina in the commit 8d5a11122c32f4d9eb87536886c6e893377bdd07. Besides this patch contains a better implementation of the generic handler function handler::multi_range_read_info_const() that takes into account gaps between ranges when calculating the cost of range index scans. It also contains some corrections of the implementation of the handler function records_in_range() for MyISAM. This patch supports the feature for InnoDB and MyISAM.
*	Create 'main' test directory and move 't' and 'r' there	Michael Widenius	2018-03-29	1	-0/+169