Assuming a cluster running HDFS, MapReduce version 2 (MRv2) on YARN with all settings
at their default, what do you need to do when adding a new slave node to cluster?
A.
Nothing, other than ensuring that the DNS (or/etc/hosts files on all machines) contains
any entry for the new node.
B.
Restart the NameNode and ResourceManager daemons and resubmit any running jobs.
C.
Add a new entry to /etc/nodes on the NameNode host.
D.
Restart the NameNode of dfs.number.of.nodes in hdfs-site.xml
A
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A is correct answer.
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Did anyone pass exam with all these answers?
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did someone try recently to achieve the exam??? were the questions similar? 🙂
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A
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