Re: [Maria-developers] c457f237511: MDEV-30984 Online ALTER table is denied with non-informative error messages

Hello Sergei! Apparently, while I was making the changes to this fix, I've also ended up in a small THD refactoring. Please see commits a1df5fdc <https://github.com/MariaDB/server/commit/a1df5fdce815d59bf7dc62687e940e7d8d2b1206> and 4e2deb34 <https://github.com/MariaDB/server/commit/4e2deb34237fdd10a556df974a64ff12cca98d55> as well. The new version of the fix is 5229ea56 <https://github.com/MariaDB/server/commit/5229ea5605749a7db0cec6a1310a6bccba741af5>. Many changes there, see the commit message. Regards, Nikita