AMBARI-6015: Blueprint Topology Validation
As of Ambari 1.6.1, when creating a blueprint, the cluster topology will be validated against the information provided in the Ambari Stack definition. This validation is performed by default. See Improvements for more information on this change.
AMBARI-6012: ATS start fails due to ClassNotFoundException
The Application Timeline Server (ATS) component of YARN configuration property changed with the HDP 2.1.3 release. If you install a patch release of HDP with Ambari 1.6.1, you must change the following YARN configuration property:
During the Customize Services step of the Cluster Install Wizard, or after cluster install, browse to Ambari Web > Services > YARN Configs and make the following modification:
If you install and use HDP 2.1.2 or 2.1.1:
yarn.timeline-service.store-class=org.apache.hadoop.yarn.server.applicationhistoryservice.timeline.LeveldbTimelineStore
If you install and use HDP 2.1.3:
yarn.timeline-service.store-class=org.apache.hadoop.yarn.server.timeline.LeveldbTimelineStore
Running Ambari 1.6.1 and HDP 2.1.2 without changing this configuration causes ATS start to fail with the following error message:
Fail: Execution of 'ls /var/run/hadoop-yarn/yarn/yarn-yarn-historyserver.pid>/dev/null 2>&1 && ps 'cat /var/run/hadoop-yarn/yarn/yarn-yarn-historyserver.pid'>/dev/null 2>&1' returned 1.
AMBARI-5715: Ability to edit repository Base URLs via Ambari Web
As of Ambari 1.6.1, the repository Base URLs are available to manage from the Ambari Web interface. After logging into Ambari Web, browse to Admin > Cluster to review/edit the Base URLs for the HDP Stack repositories.
AMBARI-5459: HDP-UTILS repository is no longer in ambari.repo
As of Ambari 1.6.1, the HDP-UTILS repository is no longer defined in the ambari.repo file. Instead, this repository is managed as part of the HDP Stack, along with the HDP repository.
After upgrading the Ambari 1.6.1, please review the repository Base URLs from Ambari Web and confirm HDP-UTILS is set correctly for your environment.
For more information about working with HDP repository paths, see Managing Stack Repositories.
