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Galera reads non-existent values from empty gvwstate.dat #354
A server somehow ended up with an empty gvwstate.dat file. When the MySQL service was restarted, Galera seemed to believe that it successfully restored the viewstate from the file. The viewstate is obviously invalid, so Galera fails with a non-intuitive error "invalid UUID: 00000000."
For example, let's truncate
Then the error log shows: