Was unable to run 10.5.8 in multi master due to locking issues (
MDEV-23328?) and upgraded to 10.5.9 hoping for resolution.
Unfortunately, it is now even more unstable with the following error appearing on nodes within a few minutes of uptime.
mariadbd: /home/buildbot/buildbot/build/mariadb-10.5.9/wsrep-lib/include/wsrep/client_state.hpp:508: int wsrep::client_state::ordered_commit(): Assertion `owning_thread_id_ == wsrep::this_thread::get_id()' failed.
210222 16:39:07 [ERROR] mysqld got signal 6 ;