Description:
On one day I upgraded from 5.6.10 to 5.6.37 using the downloaded install package mysql-installer-community-5.6.37.0.msi, which worked as expected.
However, the next day when I want to upgrade to 5.7.19 using the downloaded install package mysql-installer-community-5.7.19.0.msi, it did not offer any upgrades for MySQL Server. In fact, at first, it offered no upgrades at all.
After doing a Catalog...Update operation, and waiting a day (after posting an initial question on this issue on the forum), the product catalog did show two instances of MySQL Server 5.7.19 dated 7/17/2017 (as well as other older versions of MySQL Server and other "products"). After doing that, I did see little yellow upgrade icons for Connector/ODBC (currently at version 5.3.8) and Connector/J (currently at version 5.1.42), but nothing for Server, Workbench, Documentation or Samples and Examples.
After posting on the community forum, I waited for a day and seeing no help forthcoming, I proceeded to "Add...". That dialog had an entry to add 5.7.19, but nothing for upgrading. I then proceeded down that path.
(This install worked, but did some very unfriendly things that I will report as their own bugs.)
This "silently" REMOVED version 5.6.37, removed the Windows service MYSQL56.
I then tried to remove version 5.7.19, to see if that would restore my old version. Nope. I would have either had to restore from a backup, or proceed to configure 5.7.19, which I was able to do.
But it did not offer ANY upgrade assistance, did not remember where my defaults file had been, created a new data directory. In short, it did not do an upgrade at all, it did a new install.
(Once I reconfigured 5.7.19, I was able to do a mysql_upgrade, but this did not go the way I expected or wanted it to).
How to repeat:
I have not actually tried to repeat the issue, but if it is repeatable, this is how I did things.
1. Install 5.6.10, X64, using MSI mysql-installer-community-5.6.10.1.msi
2. NOTE: Install to a different path, say D:\Pro\MySQL
3. Create your own data directory, and configure MySQL to use that.
4. Upgrade to 5.6.37 using mysql-installer-community-5.6.37.0.msi
5. Try to upgrade to 5.7.19 using mysql-installer-community-5.7.19.0.msi
