Map Reduce Monitor - Elapsed Time

commit 7e0c2f6befd9fac4c0e04a8943e312f4908e1fda
Author: Nick Holub <nikholub@gmail.com>
Date:   Mon Dec 30 11:51:46 2013 -0800

    fix #602 Map Reduce Monitor - Elapsed Time

commit a59eab46420baddc9a99d8a14b5461fd907a9e97
Author: Nick Holub <nikholub@gmail.com>
Date:   Mon Dec 30 11:50:07 2013 -0800

    fix #602 Map Reduce Monitor - Elapsed Time