You can also create Ranger policies by issuing grant/revoke commands via hbase shell. Check slide 25 here from @sneethiraj: http://www.slideshare.net/Hadoop_Summit/securing-hadoop-with-apache-ranger So if customer can get a list of the grant commands they previously issued, they could possible re-run them and get the Ranger policies automatically created. ... View more

@Rainer Geissendoerfer Others have encountered similar issues with the Nifi service (usually on Java 😎 as well but I have not been able to consistently reproduce it yet. From what I have seen of this issue, if you run the steps to start Nifi manually via CLI, it works (but for some reason not from Ambari). You can try below manual commands to start Nifi and populate the pid file so that Ambari can track its status: su - nifi export JAVA_HOME=/usr/java/default /opt/nifi-1.1.1.0-12/bin/nifi.sh start >> /var/log/nifi/nifi-setup.log cat /opt/nifi-1.1.1.0-12/bin/nifi.pid | grep pid | sed 's/pid=\(\.*\)/\1/' > /var/run/nifi/nifi.pid #run below as root chown nifi:nifi /var/run/nifi/nifi.pid If you are encountering the same issue, could you provide the below details so we can try to reproduce it: java version OS/version Ambari + HDP version (is this sandbox?) are you installing Nifi service on same node as Ambari? ... View more

The Zeppelin ambari service downloads version of Zeppelin prebuilt with version of Spark found in your HDP installation. This version probably changed when you upgraded the cluster which is resulting in your error. Easiest thing would be to uninstall and re-install Zeppelin service. Step by step instructions here https://github.com/hortonworks-gallery/ambari-zeppelin-service#remove-zeppelin-service In the future, there will be enhancements made to allow the service to support upgrades. ... View more

Couple of options: 1. From Ambari, to smoke test components one at a time, you can select "Run Service Check" from the "Service Actions" menu for that component 2. You can also invoke the smoke test via API https://cwiki.apache.org/confluence/display/AMBARI/Running+Service+Checks 3. You can manually run the validation checks provided in the doc: https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_installing_manually_book/content/rpm_validating_the_core_hadoop_installation.html ... View more