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Java - Test Questions on 'bigdata' - 8 questions found
Which of the following is a valid flow in Hadoop ?
Input -> Reducer -> Mapper -> Combiner -> -> Output
Input -> Mapper -> Reducer -> Combiner -> Output
Input -> Mapper -> Combiner -> Reducer -> Output
Input -> Reducer -> Combiner -> Mapper -> Output
MapReduce was devised by ...
Which of the following is not a phase of Reducer ?
How many instances of Job tracker can run on Hadoop cluster ?
Which of the following is not the Dameon process that runs on a hadoop cluster ?
What is a Sequence File?
A Sequence File contains a binary encoding of an arbitrary number of homogeneous writable objects.
A Sequence File contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be of same type.
A Sequence File contains a binary encoding of an arbitrary number of heterogeneous writeable objects.
A Sequence File contains a binary encoding of an arbitrary number of Writable Comparable objects, in sorted order.
What is the input to the Reduce function ?
One Key and One Value
Multiple Keys and Multiple associated Values
Multiple Keys and One associated values with each
One key and associated values.
Which of the following is the implementation language for Map Reduce Framework ?
map reduce framework
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