[R-pkg-devel] "Connections left open" Error
Uwe Ligges
||gge@ @end|ng |rom @t@t|@t|k@tu-dortmund@de
Fri Aug 27 09:25:48 CEST 2021
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
>
> [[alternative HTML version deleted]]
>
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