Hadoop MapReduce Change Log Trunk (unreleased changes) INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS BUG FIXES Branch-2 ( Unreleased changes ) INCOMPATIBLE CHANGES NEW FEATURES IMPROVEMENTS BUG FIXES Release 2.1.0-alpha - Unreleased INCOMPATIBLE CHANGES NEW FEATURES YARN-1. Promote YARN to be a sub-project of Apache Hadoop. (acmurthy) IMPROVEMENTS BUG FIXES