Unfortunately both nodes do not write a human readable format nor could they be leveraged to extract the meta information from each column type.
The ARFF Writer does (yet) not support paths (to point to storage location, column type untested) and the column type Collection. However, it looks more promising as it’s kind of human readable
Unfortunately, the writer node seems to miss proper quote treatment causing the ARFF Reader to break:
ERROR ARFF Reader 5:1726 Configure failed (TokenizerException): New line in quoted string (or closing quote missing). In line 9.
Raised this ticket
Best
Mike