If Xtrabackup doesn't use it, then by all means remove :) Looking at the code it looks like it's just a check to see if MySQL is still alive when it inserts a '1' into the table ?
If Xtrabackup doesn't use it, then by all means remove :) Looking at the code it looks like it's just a check to see if MySQL is still alive when it inserts a '1' into the table ?