results_count is used to build a nice progress bar but sometimes calculating the number of records is a computationally-expensive task (for example, multi gigabyte .mbox files). When we run a job in the background, we probably don't want the speed penalty that comes from calculating this number.
We should be able to pass Runner a configuration option to skip calling this method. If the job is running in a tty, the progress bar will just show the current count without a progress bar.
results_countis used to build a nice progress bar but sometimes calculating the number of records is a computationally-expensive task (for example, multi gigabyte.mboxfiles). When we run a job in the background, we probably don't want the speed penalty that comes from calculating this number.We should be able to pass
Runnera configuration option to skip calling this method. If the job is running in a tty, the progress bar will just show the current count without a progress bar.