sparklyr has a method to start a web UI for Spark like this
spark_web(sc) where sc is an active spark connection object
that starts a browser with this URL:
Following the thread for getting access to h2o's Flow web app,
(Launching localhost web apps in Rstudio cloud)
When I try to access that I get a "Please Wait" message with a scrolling "bar chart" progress indicator that never resolves to any actual content.
Ideas of what to try next?