I can confirm that is still the case with latest MySQL version, which is why my ...

leif · on April 17, 2014

You're wrong. http://dev.mysql.com/doc/refman/5.6/en/innodb-create-index-o...

InnoDB tables have online, non-copying (for most operations) DDL in 5.6. Also, TokuDB has had online, non-copying DDL (column add and drop, add index) since TokuDB 5.0.

beberlei · on April 17, 2014

the mysql documentation definatly states otherwise: http://dev.mysql.com/doc/refman/5.7/en/innodb-create-index-o...