On 23.08.2021 18:07, Alan Aw wrote:
Hi,
I submitted a package to CRAN, but it keeps failing a particular check for
Windows. This error shows up when I check my code examples.
Error: connections left open:
<-CRANwin.fb05.statistik.uni-dortmund.de:11602
<http://cranwin.fb05.statistik.uni-dortmund.de:11602/> (sockconn)
<-CRANwin.fb05.statistik.uni-dortmund.de:11602
<http://cranwin.fb05.statistik.uni-dortmund.de:11602/> (sockconn)
Execution halted
For context, my code example does the following.
suppressWarnings(require(doParallel))
registerDoParallel(cores = 2)
# Some code examples that use foreach and %dopar%
stopImplicitCluster()
Other contextual information:
- I already import doParallel in the DESCRIPTION file.
- My package passes all checks on the Linux machine.
I have read elsewhere (e.g., this thread
<https://github.com/HenrikBengtsson/future/issues/327>) that examples with
parallelization lead to this error. However stopImplicitCluster() does not
seem to fix it.
Could someone familiar with this please troubleshoot? Thank you.
No idea about the doParallel package, but perhaps it helps to open a
cluster explicitly and in the end stop exactly that cluster?
Best,
Uwe Ligges
Alan
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