Which one of the following statements is true regarding <key,value> pairs of a MapReduce job? a)A key class must implement Writable. b)A key class must implement WritableComparable. c)A value class must implement WritableComparable. d)A value class must extend WritableComparable.

Which one of the following statements is true regarding <key,value>
pairs of a MapReduce job?
a)A key class must implement Writable.
b)A key class must implement WritableComparable.
c)A value class must implement WritableComparable.
d)A value class must extend WritableComparable.
by

1 Answer

Answer :

A key class must implement WritableComparable.
by

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