As a POC working on installation and config of CDH on 3 VM nodes cluster (RHEL 6.7) using latest CM.
First installation didn’t go throu and I uninstalled everything following instructions in Installation guide.
During second installation on the step First Run getting the error
(All directories in dfs.datanode.data.dir are invalid: "/hdpopt/dfs/dn/" "/opt/dfs/dn/")
Any idea on what might causing the issue would be greatly appreciated.