Chapter 5. Upgrading HDF Services on an HDP Cluster
About This Task
You can only upgrade NiFi and install the NiFi Registry when you are upgrading HDF 3.1.x services on an HDP cluster. You cannot upgrade SAM or Schema Registry. You should uninstall these services before upgrading your HDF services on an HDP cluster. To upgrade HDF services on an HDP cluster, perform the following steps:
Upgrade Ambari
Upgrade NiFi
(Optionally) Migrate SAM and Schema Registry data from a 3.0.x cluster to an HDF 3.1.x cluster
Before You Begin
Before you begin upgrading HDF services on an HDP cluster, ensure that you have done the following:
Upgraded your HDP cluster to HDP 2.6.5.
Stop the NiFi service.
Stop and uninstall SAM and Schema Registry from Ambari. This removes SAM And Schema Registry Ambari configurations. SAM and Schema Registry databases and libraries remain on installed host(s) where applicable. If you want to migrate SAM and Schema Registry to a separate HDF 3.1.x cluster, back up these databases.