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CCD-333 · Question #49
CCD-333 Question #49: Real Exam Question with Answer & Explanation
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Question
In the reducer, the MapReduce API provides you with an iterator over Writable values. Calling the next () method:
Options
- AReturns a reference to adifferentWritableobject each time.
- BReturns a reference to a Writable object from an object pool.
- CReturns a reference to the same writable object each time, but populated with different data.
- DReturns a reference to a Writable object. The API leaves unspecified whether this is a reused
- EReturns a reference to the same writable object if the next value is the same as the previous
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