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This set of MCQs helps students to learn about administering Hadoop which is an integral part of the Hadoop implementation process. Hadoop Administrators are primarily responsible for keeping the Hadoop clusters running smoothly in production. They administer and manage the Hadoop clusters and also other resources in the Hadoop ecosystem.
___________ generates keys of type LongWritable and values of type Text.
In _____________ the default job is similar, but not identical, to the Java equivalent.
An ___________ is responsible for creating the input splits, and dividing them into records.
______________ is another implementation of the MapRunnable interface that runs mappers concurrently in a configurable number of threads.
Which of the following is the only way of running mappers?
_________ is the base class for all implementations of InputFormat that use files as their data source.
Which of the following writes MapFiles as output?
The split size is normally the size of a ________ block, which is appropriate for most applications.
An input _________ is a chunk of the input that is processed by a single map.
Textformat
Split
Datanode
All of the mentioned
Which of the following method add a path or paths to the list of inputs?
setInputPaths()
addInputPath()
setInput()
None of the mentioned
