@victor_palacios It used to work on a Mac with earlier versions of KNIME. H2O.ai would start its own process in the background and it does work with using the R community nodes (regression example , classification example ), so it seems to be a ‘communication’ problem between R and KNIME.
We had such a thing with KNIME and Python where the progress bar would not work between KNIME and Python and H2O.ai so the solution was to turn it off:
@MarcelW thank you for your effort and the suggestions. I think they put me on the right track with actually studying the error message and thinking about waht is going on.
It was the progress bar in H2O that would use characters that the KNIME/Windows console would not like and would refuse to fix using you suggestions. In the end I just introduced:
h2o.no_progress()
So no more progress bars inside the wrapper (which would not be of any real help) and now it does work. Still might be a poi…
Also recently there was some heavy editing going on on the Windows side of the R Snippets, so I wonder if something went wrong with the communication between KNIME and the R snippets on the Mac side also:
@Thyme from what I see there has been heavy editing in the specific parts of the R integration concerning the very path variables (to integrate the conda paths to an R installation) so I think it entirely possible that something went wrong under specific circumstances.
I was not immediately able to spot the problem. At a certain point the path gets replaced by something it should not … I see a removed blank and different PATH syntaxes …
Maybe @bwilhelm can weight in.