On a cluster running MapReduce v2 (MRv2) on YARN, a MapReduce job is given a directory of 10 plain text files as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?
A.
We cannot say; the number of Mappers is determined by the ResourceManager
B.
We cannot say; the number of Mappers is determined by the developer
C.
30
D.
3
E.
10
F.
We cannot say; the number of mappers is determined by the ApplicationMaster
Chosen Answer:
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