Considering the Map-Reduce paradigm and the Hadoop platform, analyse the following statements regarding the MR programming model.
(select all the options that are true sentences).

Question

Considering the Map-Reduce paradigm and the Hadoop platform, analyse the following statements regarding the MR programming model. 
 (select all the options that are true sentences).

Answer

The reduce() function may emit one key-value pair.

Answer

No response (no penalty).

Answer

The map() function can emit any number of key-value pairs (0 to unlimited).

Answer

The reduce() function receives all key-value pairs from each key.

Answer

The reduce() function cannot emit zero key-value pairs (i.e. cannot return an empty result).

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Considering the Map-Reduce paradigm and the Hadoop platform, analyse the followi...

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