Format NameNodes
To add a NameNode HA to a federation, you must format each new active NameNode that you want to add to the federation. In addition, you must bootstrap the standby NameNode.
You must have configured the parameters for the
NameNodes.
Note | |
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Ensure that you format only those NameNodes that are associated
with newly created namespaces for the federation. Formatting any NameNode with already
existing namespaces could result in data loss. |