Your Hadoop cluster is configured with HDFS and MapReduce version 2 (MRv2) on YARN. Can
you configure a worker node to run a NodeManager daemon but not a DataNode daemon and still
have a function cluster?
A.
Yes. The daemon will receive data from the NameNode to run Map tasks
B.
Yes. The daemon will get data from another (non-local) DataNode to run Map tasks
C.
Yes. The daemon will receive Reduce tasks only
Answer is “B” – We have to get our data from somewhere (i.e. other DataNode. Data “Never” goes via NameNode
0
0
B
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A
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