HADOOP-2833. Merge to 0.16 branch for 0.16.2 release.  This fixes a cache consistency problem in 0.16.2

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.16@642478 13f79535-47bb-0310-9956-ffa450edef68
6 files changed