YARN-2071. Modified levelDB store permissions to be readable only by the server user. Contributed by Zhijie Shen.
svn merge --ignore-ancestry -c 1597231 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1597232 13f79535-47bb-0310-9956-ffa450edef68