CALL mtr.add_suppression("Master's UUID has changed, its old UUID is");

# Case 1:
# @@SERVER_UUID is readonly.
-----------------------------------------------------------------------------
SET GLOBAL SERVER_UUID= UUID();
ERROR HY000: Variable 'server_uuid' is a read only variable

# Case 2:
# If the file does not exists, mysqld generates it automatically.
-----------------------------------------------------------------------------

# Case 3:
# If there is no UUID in the file, mysqld generates it automatically.
-----------------------------------------------------------------------------

# Case 4:
# If there is a UUID in the file, it will be loaded into SERVER_UUID.
-----------------------------------------------------------------------------