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How to recover from a failed NameNode move?

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Contributor

Ambari has a handy wizard for helping move a NameNode from one machine to another. In the event something were to go wrong with the move in, say, a NameNode HA enviornment are there any recommendations on how to recover and restore the NameNode setup back to its original server? Would the move NameNode wizard be the best approach to putting the server back or would the Ambari API be a better approach?

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Master Mentor

@Kent Baxley I think little bit more information will help. Is NN HA part of the picture?

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