MAPREDUCE-4967. TestJvmReuse fails on assertion. (kkambatl via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1442828 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4434. Backport MR-2779 (JobSplitWriter.java can't handle large job.split file) to branch-1. (kkambatl via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1442830 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4970. Child tasks (try to) create security audit log files. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1442831 13f79535-47bb-0310-9956-ffa450edef68