svn merge -c 1507385 FIXES: MAPREDUCE-1981. Improve getSplits performance by using listLocatedStatus. Contributed by Hairong Kuang and Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1514767 13f79535-47bb-0310-9956-ffa450edef68