[Swift-user] throttling mapping threads

[Allan Espinosa]

Hi,

How do you throttle the number of mapping threads like
foreach.max.threads ?  I have this workflow whose mapper accesses a
mysql database that makes a 400+ access at a time.

I can change foreach.max.threads, but that then would affect the
number of jobs I could send at a time too.

-- 
Allan M. Espinosa <http://amespinosa.wordpress.com>
PhD student, Computer Science
University of Chicago <http://people.cs.uchicago.edu/~aespinosa>