MAPREDUCE-220 makes CPU/Memory usage of Tasks available in JobHistory files. Use this
to emulate the CPU usage of Tasks (of course, once MAPREDUCE-2104 is done).
Progress reported by a reduce task executed via LocalJobRunner is incorrect
[MAPREDUCE] The new MapReduce API should make available task's progress to the task
CPU/Memory emulation for GridMix3
[Gridmix] Improve cumulative CPU usage emulation