In the meantime Hortonworks has reflected this limitation in the upgrade documentation: Important Ambari 2.7 only supports fully managing a HDP 3.0 cluster. If you are running any other HDP version, you must first upgrade to HDP 2.6 using Ambari 2.6. You must first upgrade to HDP 2.6.5 if you use Hive. Then, upgrade to Ambari 2.7 and use it to upgrade your cluster to HDP 3.0." https://docs.hortonworks.com/HDPDocuments/Ambari-2.7.0.0/bk_ambari-upgrade/content/ambari_upgrade_guide.html ... View more