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Re: MySQL 5.7 to 8 Upgrade Fail | Data Dictionary initialization failed
Posted by: Susan Koerner
Date: May 23, 2018 08:59AM

Hello Vinod -

Thanks for raising this issue. I have a few questions to help me further understand the failure:

- The bin directory noted in the log is 5.7. Did you install the 8.0.11 binaries in a 5.7 directory structure?
- The mysqld log seems incomplete. When a DD is found partially upgraded, it is because it had tried to start a previous time and encountered some error. Do you have any further logs to show any other errors?
- Were you able to restart the MySQL server after it aborted? Either using 5.7 or 8.0?
- Did you backup your data? If you cannot restart the MySQL server, you may need to revert to the backup.
- Possibly moot at this point, but a major upgrade (from 5.7 to 8.0 or any other major upgrade) is not supported using the MySQL installer. This is noted in the documentation.

Could you provide a little more detail what you did to prepare for the upgrade, and how you performed the install?

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Re: MySQL 5.7 to 8 Upgrade Fail | Data Dictionary initialization failed
May 23, 2018 08:59AM


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