This is the first GA release in the 2.8 release line. It contains 315 bug fixes, improvments and other enhancements since 2.8.1. For major features and improvements for Apache Hadoop 2.8, please refer: overview of major changes. For details of 315 fixes, improvements, and other enhancements since the previous 2.8.1 release, please check: release notes and changelog
2017 Oct 24