@Erin Fusaro Have you considered using NiFi to transfer the data? The FetchHDFS process would be configured to communicate to the unsecure cluster and the PutHDFS processor would be configured to communicate with the secure cluster. ... View more

@Jasper As you mention, a Forest is just a container for multiple domains. If there is a trust relationship in place, then you should be able to authenticate from Domain1 and access resources in Domain2. You can also authenticate against Domain1 and query Domain2. I believe the HDP stack security components can authenticate to a domain within a Forest without any issues as the Forest should be transparent to HDP. Having said that, I believe you can only specify a single domain in the configuration options for the HDP components. While you can query multiple domains using tools like "ldapsearch", I don't think you can currently do so using HDP. ... View more

@Geetha Anne Sometimes the start will fail the first time, usually because of a timeout. If any one service fails, the other services will not be attempted; you see those represented with the yellow/orange color. If you proceed, you should be able to start all services via the Ambari "Start All" on the Ambari Dashboard. ... View more

@irfan aziz Your hostname "hadoop.localdomain hadoop" should always point the proper IP address of your server in /etc/hosts. I think you have a problem with your /etc/hosts file. I expect it should look more like this: 127.0.0.1 localhost 127.0.1.1 localhost2 192.130.3.21 hadoop.localdomain hadoop Can you confirm that is what your /etc/hosts file actually looks like? ... View more

@Dinesh Das I wrote an article that covers increasing space for Docker on RHEL 7. https://community.hortonworks.com/content/kbentry/65714/how-to-modify-the-default-docker-configuration-on.html ... View more