Hello @VidyaSargur,   thanks for your answer. You are totally right. I only realized that this is an older thread after I had already posted.    Therefore I already created a new thread (https://community.cloudera.com/t5/Support-Questions/Permanently-store-sqoop-map-column-hive-mapping-for-DB2/td-p/299556).   regards  ... View more

Okay so I wrote an example nifi process to do it   https://www.datainmotion.dev/2020/01/flank-stack-nifi-processor-for-kafka.html ... View more

I could do the Map process on OrcFile, but Reduce fails with ‘.Can’t input data OCR[]’ error.   Do you have some official documentation that confirm that OCR file does not work with incremental lastmodified import? ... View more

Back at it this morning and, while I don't quite get what's happening, I consider this resolved. This morning I did the following: removed a prior install of Apache Zeppelin after I realized that after a reboot, it still responded to localhost:8080 confirmed it was indeed gone started up Virtual box and started the sandbox then zeppelin still responded to localhost:8080, which really confused me then tried localhost:9995, to which a different zeppelin page responded - so that was a good thing then, remembering something from a previous experience, I tried 127.0.0.1:8080 and then Ambari responded with its login page This is now the second time I have seen localhost and 127.0.0.1 be treated differently; one of these days I'll have to figure out why. But for now, I'm back in business and continuing the tutorial. Thanks everyone for their help! Cecil ... View more

Thanks for the workaround. This has solved my group-access problem. ... View more

@Eric Hanson I don't have an official opinion on this. It really depends on the available resources. If the cluster is really large, then it may be beneficial to put the KDC on its own VM; but for a small cluster (<15 hosts), that may be a bit overkill and the least utilized host for the KDC maybe sufficient. That said, the workload could be spread out by placing a one or more slave KDCs around the cluster, There is also the option to separate the kadmin and krb5kdc processes to different hosts - though this is more for security concerns than for performance or resource concerns. One thing to keep in mind. For Ambari server versions 2.5.0 and below, it appears that the cluster does an abnormal amount of kinit's. This is currently being looked into. So far, it is unclear whether this is a bug, expected behavior, or something in between. The effect of this issue on a small cluster is minimal and not noticeable over a short period of time. On a large cluster (say 900 nodes), the Kerberos log files tend to get large quickly. Performance of the KDC on such a cluster, even when the KDC exists on a host with Hadoop services, does not appear to be affected. The main issue is merely log file size. However, if an issue is found and fixed, less kinit's couldn't hurt. 🙂 ... View more