MAPREDUCE-5332. Support token-preserving restart of history server. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1527015 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5531. Fix compat with hadoop-1 in mapreduce.(TaskID, TaskAttemptID) by re-introducing missing constructors. Contributed by Robert Kanter.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1527033 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5545. org.apache.hadoop.mapred.TestTaskAttemptListenerImpl.testCommitWindow times out. Contributed by Robert Kanter


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1527037 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5529. Fix compat with hadoop-1 in mapred.TotalOrderPartitioner by re-introducing (get,set)PartitionFile which takes in JobConf. Contributed by Robert Kanter.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1527048 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4312-trunk-gd