Cloudera

DS-200 · Question #67

What do you need to do when adding new slave nodes to a cluster?

The correct answer is E. add the new node's DNS name to the conf/slaves file on the master node. See the full explanation below for the reasoning.

Question

What do you need to do when adding new slave nodes to a cluster?

Options

AHalt and resubmit any running MapReduce jobs to guarantee correctness.
BRestart the NameNode daemon.
CAdd a new entry to /etc/slavenodes on the NameNode host.
DIncrease the value of dfs.number.of.nodes in hdfs-site.xml.
Eadd the new node's DNS name to the conf/slaves file on the master node.

How the community answered

(44 responses)

A
2% (1)
B
7% (3)
C
16% (7)
D
2% (1)
E
73% (32)

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