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CCA-500 · Question #21
CCA-500 Question #21: Real Exam Question with Answer & Explanation
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Question
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.
Options
- AYou must modify the configuration files on the NameNode only.
- BYou must modify the configuration files on each of the six SataNodes machines
- CYou don't need to restart any daemon, as they will pick up changes automatically
- DYou must restart the NameNode daemon to apply the changes to the cluster
- EYou must restart all six DatNode daemon to apply the changes to the cluster
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