The upstream MySQL 5.7 release will be end of life in October 2023. David Stokes has a blog post about the upcoming EOL and suggestions for managing your upgrade from 5.7 to 8.0.
We’d love to hear from users still on 5.7, what blockers are keeping you on 5.7 and your plans for October and beyond. If you’re trying to upgrade from MySQL 5.7 to MySQL 8.0, we can help. If you need more time on MySQL 5.7 and need support after October 2023, we have a subscription for that where we can provide support up to three years for Percona Server for MySQL 5.7. You can learn more about that on Percona.com.
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We ran into this Data Dictionary upgrade problem:
https://bugs.mysql.com/bug.php?id=110722
The log file posted there is from MySQL 8.0.33 CE on Windows, but I get exactly the same with Percona 8.0.32-24 on Linux.
Anyone have any hints on what these “tmp/#sql5305_” tablespaces originated from, and how to clean them up?
Fixing these inconsistencies is always tricky. If you can afford it I suggest to fix it by provisioning a new replica by taking a logical dump/restore with mydumper/myloader.
Dump/reload is certainly not the preferred option; production is an XtraDB cluster. I would have to build up an entirely new cluster, would I not?