YARN-62. Modified NodeManagers to avoid AMs from abusing container tokens for repetitive container launches. Contributed by Omkar Vinit Joshi.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1503986 13f79535-47bb-0310-9956-ffa450edef68
YARN-912. Move client facing exceptions to yarn-api module. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1504032 13f79535-47bb-0310-9956-ffa450edef68