tm_map has parallel::mclapply error in R 3.0.1 on

Question

I am using R 3.0.1 on Platform: x86_64-apple-darwin10.8.0 (64-bit)

I am trying to use tm_map from the tm library. But when I execute the this code

library(tm)
data('crude')
tm_map(crude, stemDocument)

I get this error:

Warning message:
In parallel::mclapply(x, FUN, ...) :
  all scheduled cores encountered errors in user code

Does anyone know a solution for this?

Answer 1

I ran into the same problem in tm using an Intel quad core I7 running on Mac OS X 10.10.5, and got the following warning:

In mclapply(content(x), FUN, ...) scheduled core 1 encountered error in user code, all values of the job will be affected

I was creating a corpus after downloading Twitter data.

Charles Copley's solution worked for me as well. I used: tm_map(*filename*, stemDocument, lazy = TRUE) after creating my corpus and then tm worked correctly.