MAPREDUCE-2804. Fixed a race condition in setting up the log directories
for tasks that are starting at the same time. (omalley)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-security-204@1161328 13f79535-47bb-0310-9956-ffa450edef68
6 files changed