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Free Apache-Hadoop-Developer – Hadoop 2.0 Certification exam for Pig and Hive Developer Practice Test Question

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Showing 7–9 of 10 questions

Question 7

Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?

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    ResourceManager
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    NodeManager
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    ApplicationMaster
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    ApplicationMasterService
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    TaskTracker
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    JobTracker
Question 8

You’ve written a MapReduce job that will process 500 million input records and generated 500 million key-value pairs. The data is not uniformly distributed. Your MapReduce job will create a significant amount of intermediate data that it needs to transfer between mappers and reduces which is a potential bottleneck. A custom implementation of which interface is most likely to reduce the amount of intermediate data transferred across the network?

Select an option, then click Submit answer.

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    Partitioner
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    OutputFormat
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    WritableComparable
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    Writable
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    InputFormat
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    Combiner
Question 9

Examine the following Hive statements:

C:\Users\Chaudhry\Desktop\1.jpg

Assuming the statements above execute successfully, which one of the following statements is true?

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    Each reducer generates a file sorted by age
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    The SORT BY command causes only one reducer to be used
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    The output of each reducer is only the age column
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    The output is guaranteed to be a single file with all the data sorted by age