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Q3 Multiple choice

What two processes must you do if you are running a Hadoop cluster with a single NameNode and six DataNodes, and you want to change a configuration parameter so that it affects all six DataNodes. (Choose two)

Select all that apply.

A
You must modify the configuration files on the NameNode only. DataNodes read their configuration from the master nodes
B
You must modify the configuration files on each of the DataNodes machines
C
You don't need to restart any daemon, as they will pick up changes automatically
D
You must restart the NameNode daemon to apply the changes to the cluster
E
You must restart all six DatNode daemon to apply the changes to the cluster

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