On 21/02/2019 23:40, Justin Swanhart wrote: > It is possible that the two versions have different query plans, with the new > version requiring more temp space. It is also possible that different > temporary table engines are in use. Check to make sure you are using aria > for temp tables and not innodb. > Yes i was using Aria for tmp storage engine, i switched to myisam like in mysql 5.5, and it seem to have a nice effect on tmp space used for now !
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