MAPREDUCE-5234. Change mapred.TaskReport and mapreduce.TaskReport for binary compatibility with mapred in 1.x but incompatible with 0.23.x. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1483940 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4927. Historyserver 500 error due to NPE when accessing specific counters page for failed job. Contributed by Ashwin Shankar


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1483974 13f79535-47bb-0310-9956-ffa450edef68