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Hadoop operating system question


I support a Hortonworks Hadoop cluster that is on an isolated network.  Currently running HDP- and RedHat 6.6 for the operating system.


I need to rebuild a couple of my data nodes and no longer have access to the RedHat repo.  I do have access the a centos repo.


Question is, can I rebuild the data nodes using Centos 7 when the majority of my cluster is running RH6?  Ultimately I would like to move everything to Centos 7 but the cluster is not running HA and I am not sure what the process for migrating everything would be