We have some mariadb 10.3 instances where the server has log entries similar to below:
Maybe few times per day at most, I haven't found what the exact trigger is
The value of "record field" 64 may vary, but the "len" is always this 18446744073709544479.
We haven't noticed any operational issues on the servers so far but still interested to learn if this is something to look into deeper
For example, running CHECK TABLE against all tables doesn't come up with his message, either.
I don't really have much information on when/how these might have began to happen.
But what seems to be somewhat related is that the servers where this happens are part of galera cluster, single instance servers do not have these entries.