Ps 5.7 db 925 #345
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Ps 5.7 db 925 #345
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added 2 commits
February 3, 2016 12:17
…ate after the changes introduced by DB-848 * Issue is due to a bad optimization added during the cardinality rework from https://blueprints.launchpad.net/percona-server/+spec/tokudb-background-auto-analyze * This only happenes with partitioned tables. There were cases where the optimizer and/or partition handler would call the handler to update the shared key record count structures multiple times and it would 'clear' the values in between calls. There was an optimization added in TokuDB that would not update the record count values if it knew that the cardinality had not changed since the last call, thus leaving all of the record counts in the 'cleared' state. * Removed this optimization, re-recorded affected tests and validated the results against the same conditions in InnoDB. * Removed 6 year old hack that was wrong in the first place to fix a '0' record count and replaced with logic matching InnoDB.
Conflicts: storage/tokudb/ha_tokudb.cc storage/tokudb/hatoku_cmp.cc
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http://jenkins.percona.com/view/5.7/job/mysql-5.7-param/86/