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HDPCD – Hortonworks Data Platform Certified Developer

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Showing 4–6 of 10 questions

Question 4

MapReduce v2 (MRv2/YARN) is designed to address which two issues?

Select all that apply, then click Submit answer.

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    Single point of failure in the NameNode.
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    Resource pressure on the JobTracker.
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    HDFS latency.
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    Ability to run frameworks other than MapReduce, such as MPI.
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    Reduce complexity of the MapReduce APIs.
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    Standardize on a single MapReduce API.
Question 5

In Hadoop 2.2, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers

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    ZKFailoverController
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    ZooKeeper
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    QuorumManager
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    JournalNode
Question 6

What data does a Reducer reduce method process?

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    All the data in a single input file.
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    All data produced by a single mapper.
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    All data for a given key, regardless of which mapper(s) produced it.
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    All data for a given value, regardless of which mapper(s) produced it.