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we have production HDP cluster ,

HDP version - 2.6.5
Ambari version - 2.6.1

We are performing now the change hostname configuration according to the document - https://docs.cloudera.com/HDPDocuments/Ambari-2.7.0.0/administering-ambari/content/amb_changing_host_names.html

The last stage is talking about – in case NameNode HA enabled , then need to run the following command on one of the name node machines

hdfs zkfc -formatZK -force

since we have active name node and standby name node , we assume that our namenode is HA enable!

enter image description here

but we want to understand what are the risks when doing the following cli on one of the namenode machines

hdfs zkfc -formatZK -force

is the below command is safety to run without risks ?

Judy
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