WorksheetsIntroduction to MapReduce
Total questions: 10
Worksheet time: 4mins
It is a programming model for processing and generating large data sets with a parallel, distributed algorithm on a cluster.
Hadoop
MapReduce
Map
Framework
Who invented MapReduce?
Microsoft
Doug Cutting
Mike Cafarella
MapReduce is basically written in C programming language.
True
False
"1 MapReduce is cool"
In the statement above, identify which is the key.
MapReduce is cool
1
None of the above
It is the line content, excluding the line terminators.
Key
Map
Value
Reduce
What are the two (2) phases of MapReduce?
Key & Value
Input & Output
Split & Shuffle
Map & Reduce
Which of the following is the correct order of the stages of MapReduce?
Input, Shuffling, Mapping, Splitting, Reducing, Final Result
Input, Splitting, Reducing, Shuffling, Mapping, Final Result
Input, Splitting, Mapping, Shuffling, Reducing, Final Result
None of the choices
A method of separating out rows and spreading them evenly in sub-tables within databases.
Hash Brown
Hash Tag
Hash Partitioner
Hash Combiner
The MapReduce Combiner is also known as the ___.
Semi-Reducer
Semi-Mapper
Combiner
Reducer
It refers to the ability to move the computation close to where the actual data resides on the node, instead of moving large data to computation.
Database
MapReduce
Data Locality
Data Flexibility
