svn merge -c 1568118 FIXES: MAPREDUCE-5670. CombineFileRecordReader should report progress when moving to the next file. Contributed by Chen He


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1568126 13f79535-47bb-0310-9956-ffa450edef68