paleolimbot commented on PR #14250:
URL: https://github.com/apache/arrow/pull/14250#issuecomment-1315422027
Sure thing! I tried:
```r
library(arrow, warn.conflicts = FALSE)
tf <- tempfile()
write.csv(mtcars, tf, row.names = FALSE)
# If we use the signal handling infrastructure in the main process before
# doing the forked workers thing, then the calls hang
# read_csv_arrow(tf)
parallel::mclapply(1:2, function(...) {
read_csv_arrow(tf)
})
```
Cancellation in the main process still works; however, the worker processes
hang instead of error (if a signal handler ever gets registered before forking).
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