Hortonworks HADOOP-PR000007 : Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer)

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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:

Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:

1. What data does a Reducer reduce method process? Reference: Yahoo! Hadoop Tutorial, Module 4:
MapReduce

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

2. Which Hadoop component is responsible for managing the distributed file system metadata?

A) NameNode
B) Metanode
C) NameSpaceManager
D) DataNode

3. What is the term for the process of moving map outputs to the reducers?

A) Combining
B) Reducing
C) Partitioning
D) Shuffling and sorting

4. You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and
# data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's
given a path object representing this directory?

A) One, no special characters can prefix the name of an input file
B) Two, file names with a leading period or underscore are ignored
C) Four, all files will be processed
D) Three, the pound sign is an invalid character for HDFS file names
E) None, the directory cannot be named jobdata

5. What does the following command do? register '/piggyban):/pig-files.jar';

A) Specifies the location of the JAR file containing the user-defined functions
B) Invokes the user-defined functions contained in the jar file
C) Assigns a name to a user-defined function or streaming command
D) Transforms Pig user-defined functions into a format that Hive can accept

Solutions: