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HADOOP-PR000007 Exam Questions & Answers

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HADOOP-PR000007 Exam Questions & Answers

Vendor: Hortonworks

Certifications: HCAHD

Exam Code: HADOOP-PR000007

Exam Name: Hortonworks Certified Apache Hadoop 2.0 Developer (Pig and Hive Developer)

Updated: Nov 25, 2024

Q&As: 108

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HADOOP-PR000007 Online Practice Questions and Answers

Questions 1

When can a reduce class also serve as a combiner without affecting the output of a MapReduce program?

A. When the types of the reduce operation's input key and input value match the types of the reducer's output key and output value and when the reduce operation is both communicative and associative.

B. When the signature of the reduce method matches the signature of the combine method.

C. Always. Code can be reused in Java since it is a polymorphic object-oriented programming language.

D. Always. The point of a combiner is to serve as a mini-reducer directly after the map phase to increase performance.

E. Never. Combiners and reducers must be implemented separately because they serve different purposes.

Show Answer
Questions 2

What does the following command do? register andapos;/piggyban):/pig-files.jarandapos;;

A. Invokes the user-defined functions contained in the jar file

B. Assigns a name to a user-defined function or streaming command

C. Transforms Pig user-defined functions into a format that Hive can accept

D. Specifies the location of the JAR file containing the user-defined functions

Show Answer
Questions 3

Which one of the following files is required in every Oozie Workflow application?

A. job.properties

B. Config-default.xml

C. Workflow.xml

D. Oozie.xml

Show Answer More Questions

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