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Comments on: Things to remember when you migrate from MyISAM to InnoDB http://minervadb.com/index.php/2018/06/15/migrate-from-myisam-to-innodb/ Committed to Building Optimal, Scalable, Highly Available, Fault-Tolerant, Reliable and Secured WebScale Database Infrastructure Operations Wed, 27 Jun 2018 10:59:35 +0000 hourly 1 https://wordpress.org/?v=6.5.3 By: MinervaDB Corporation http://minervadb.com/index.php/2018/06/15/migrate-from-myisam-to-innodb/#comment-9 Sat, 16 Jun 2018 06:33:48 +0000 http://minervadb.com/?p=1664#comment-9 In reply to Franz Haenel.

Accepted, There are isolated scenarios we have to recreate schema and load data separately !

]]> By: Franz Haenel http://minervadb.com/index.php/2018/06/15/migrate-from-myisam-to-innodb/#comment-8 Fri, 15 Jun 2018 18:50:14 +0000 http://minervadb.com/?p=1664#comment-8 From my experiences of converting a large database from myisam to innodb…

* Myisam allows auto increment on secondary columns in multi-column unique (including primary) keys. You won’t be able to convert these tables until you changed the order or removed the auto increment. https://dev.mysql.com/doc/refman/8.0/en/example-auto-increment.html#idm139722679773664

* Some queries might have a different execution path when tables are innodb instead of myisam. We had a couple of queries where execution time went from instant to seconds… If possible, record all queries and execute them on a slave instance. Once with myisam tables and once with innodb tables and compare execution times.

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