1.

Point out the wrong statement.(a) Hadoop has a library package called Aggregate(b) Aggregate allows you to define a mapper plugin class that is expected to generate “aggregatable items” for each input key/value pair of the mappers(c) To use Aggregate, simply specify “-mapper aggregate”(d) None of the mentioned

Answer» Correct option is (c) To use Aggregate, simply specify “-mapper aggregate”

The best I can explain: To use Aggregate, simply specify “-reducer aggregate”


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