Saw the same issue and debug it by adding Java option  -Dsun.security.krb5.debug=true In the logs, I found the IP address of KDC is shown instead of the hostname. That's suspicious. So I tried adding the IP -> hostname mapping of the KDC server in /etc/hosts. It resolved the issue. There could be other causes for your issue. The debug logs can show you more clues. ... View more

@Jay Kumar SenSharma Thank you very much. That solved the issue. And to answer your questions for completeness and for other members of the community.. Ambari Version = 2.6.2.2 Yes, we did install the components using the hortonworks public repo for ubunutu.. Because of the firewall requirements we had to create use our internal repo and hence chanted the repo in ambari server to point to the internal repo server. After that we are seeing the error mentioned. ... View more

HDP 3.0 is causing issues. Have the same hive and llap config in HDP 2.6.x and everything works fine. But on HDP 3.0, I am getting the following error when it tried to start the llap service.. I have checked the yarn UI and verified that the LLAP is running.. but seems like the service is not able to connect or verify that the llap app is running. WARN cli.LlapStatusServiceDriver: Watch mode enabled and got YARN error. Retrying.. LLAP status unknown ... View more

Looks like this is something to do with the driver.. I am not seeing this error anymore once I switched the driver to hive-jdbc-1.2.xxxx. I am suspecting that cognos is not compatible with the hive-jdbc-2.x ... View more

Is there anyway to debug the io cache component to find out why it's not caching ... View more