This is the first release of Apache Hadoop 3.1 line. It contains 768 bug fixes, improvements and enhancements since 3.0.0
Users are encouraged to read the overview of major changes since 3.0.0. For details of 768 bug fixes, improvements, and other enhancements since the previous 3.0.0 release, please check release notes and changelog detail the changes since 3.0.0.