GIRAPH-835: org.apache.giraph.hive.input.CheckInputTest Fails because JobProgressTracker doesn't check null (akila via majakabiljo)
GIRAPH-839: NettyWorkerAggregatorRequestProcessor tries to reuse request objects (pavanka via majakabiljo)
GIRAPH-838: setup time & total time counter also include time spent waiting for machines (pavanka via majakabiljo)