Hi all, I have NameNode and ResourceManager on the same single master node, and I am running experiments on Cloudlab.
I'm facing a problem in Hadoop 2.8.3 where I am either getting 0 vcores in YARN, or not able to access the YARN UI. This problem did not happen when I was using Hadoop 2.7.5 and the master node was named "namenode". I could access the YARN resourceManager UI by doing: full-cloudlab-machine-name:8088 When I switched to Hadoop 2.8.3, I named my master node "master" because that is the same name used in the /etc/hosts file and hadoop masters file. With the same settings as previously (hadoop 2.7.5), I am getting 0 vcores in YARN UI, and so applications are not getting deployed. So, I added in the yarn-site.xml file: yarn.resourcemanager.hostname = master Now, I am getting a certain number of vcores and applications are running, but I am not able to access the ResourceManager UI at either full-cloudlab-machine-name:8088 nor at master:8088. Please help. Thanks, Pankaj
