Kerberos: Storm Headless Principal

The Ambari "headless" principal for Storm now includes ${cluster-name} by default. Be sure to check the Ambari Principal names (on the Configure Identities step) when enabling Kerberos. This is very important when upgrading from Ambari 2.0 to Ambari 2.4

HDP 2.2 Support Deprecated

Ambari support for HDP 2.2 is deprecated with Ambari 2.4. Support for HDP 2.2 will be removed in a future Ambari release.

HDP 2.3 Support Deprecated

Ambari support for HDP 2.3 is deprecated with Ambari 2.4. Support for HDP 2.3 will be removed in a future Ambari release.

Cluster Permission Changes

Cluster Roles have replaced Cluster Permissions. The Operator permission is now the Cluster Administrator role. The Read-Only permission is the Cluster User role. Refer to Managing Cluster Roles for more information.

HDP 2.3.0 and 2.3.2 ATS Support

With newer maintenance releases of HDP 2.3 (2.3.4 or latest), the ATS component of YARN supports a new store configuration. Therefore, if attempting to install HDP 2.3.2 or earlier with Ambari, you will need to modify the store-class used by YARN ATS to work with the earlier LevelDB store. Refer to the Troubleshooting Guide for more information.

Slider View Deprecated

The Slider View is deprecated. Support for the Slider View will be removed in a future Ambari release.

Removed column filters from Ambari Web Hosts page.

The Hosts page in Ambari Web no longer has column filters. This has been replaced with a new Host Filtering Control. Refer to Filtering the Hosts List for more information. release.

HDP 2.5 Atlas Upgrade

If you plan to upgrade to HDP 2.5 and have Atlas installed in your HDP 2.3 or 2.4 cluster, Atlas must be removed prior to upgrading to HDP 2.5. Refer to the Ambari Upgrade Guide Prerequisites for more information.