Where can I find information on how to migrate from MySQL 5.6 to MySQL 5.7?
For detailed upgrade information, see Section 2.10.1, “Upgrading MySQL”. Do not skip a major version when upgrading, but rather complete the process in steps, upgrading from one major version to the next in each step. This may seem more complicated, but it will you save time and trouble—if you encounter problems during the upgrade, their origin will be easier to identify, either by you or—if you have a MySQL Enterprise subscription—by MySQL support.
How has storage engine (table type) support changed in MySQL 5.7 from previous versions?
Storage engine support has changed as follows: