sparkr databricks error: too many open devices

Question

I was using simple data manipulation using sparkr on Databricks. The code was working just fine a minute ago and suddenly I started getting the following error:

Error in png(fileName, width = plotWidth, height = plotHeight, pointsize = plotPointSize, : too many open devices

This happens even if I use, for example:

mtcars %>% select(mpg)

I was not making any plots. What could the solution be?

Answer 1

I believe this can be done without restarting the cluster. Just Clear State and Results and Run them all again and you will be good to go.

Answer 2

I am experiencing the same problem. The only solution seems to be to restart the cluster you're working on.