1.

Interface____________ reduces a set of intermediate values which share a key to a smaller set of values.(a) Mapper(b) Reducer(c) Writable(d) ReadableThe question was posed to me in unit test.The doubt is from Java Interface in section HDFS – Hadoop Distributed File System of Hadoop

Answer»

Correct answer is (b) REDUCER

The explanation: Reducer IMPLEMENTATIONS can access the JobConf for the JOB.



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