Hi All, I'm trying to understand how to recover from certain failures within Ambari. When launching within a cloud environment, it's possible that a host may be completed deleted, and you won't have the chance to decommission the node.
For example, in the event that the server hosting the master hdfs namenode was lost, would it be possible to spin up another server in its place, built completely from scratch and have this replace the old namenode master? Currently when I attempt to delete a failed host, it warns me that the following components need to be moved: NameNode, Spark History Server It also then tries to talk me through the process of copying data from the old namenode to the new namenode. If the server has been deleted, this would not be possible. Would it be possible to copy this data from the secondary namenode instead? Many thanks in advance. Cheers!
