Question

Hadoop has a library class, org.apache.hadoop.mapred.lib.FieldSelectionMapReduce, that effectively allows you to process text data like the unix ______ utility.
a) Copy
b) Cut
c) Paste
d) Move

Answer 1

Hadoop has a library class, org.apache.hadoop.mapred.lib.FieldSelectionMapReduce, that effectively allows you to process text data like the unix ______ utility.

 

Answer:b) Cut
Explanation: The map function defined in the class treats each input key/value pair as a list of fields