you might be hitting this issue/bug https://community.hortonworks.com/content/supportkb/148576/error-dag-did-not-succeed-due-to-vertex-failure-fa.html ... View more

HIVE needs to store meta data such as Table structures, OOZIE needs to store Job details etc. you can go into the db schemas of each product and see what they store. Its a persistent mechanism for storing meta data, please look at the internal architecture of each component, it will be clear. ... View more

Hi, Are you running nifi docker images with kubernetes, I assume the image has zookeeper, as that is required for teh cluster to work. nifi logs are in the nifi-app files, please check that as well. ... View more

HI, with HDF3.0 and Ambari 2.5.1 , we can install HDF to an existing HDP cluster. Please have a look https://docs.hortonworks.com/HDPDocuments/HDF3/HDF-3.0.2/index.html Thanks, Avijeet ... View more