Apache Hadoop 2.7.1 Release Notes

These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.

Non-HA rollback steps have been changed. Run the rollback command on the namenode (`bin/hdfs namenode -rollback`) before starting cluster with ‘-rollback’ option using (sbin/start-dfs.sh -rollback).

Public service notice:

Proxy level retries will not be done on AlreadyBeingCreatedExeption for create() op.