adplus-dvertising
frame-decoration

Question

How does the MapReduce program handle output records with the same hash value?

a.

They are assigned to different Reduce instances.

b.

They are combined into a single output record.

c.

They are stored in separate output files.

d.

They are ignored in the Reduce phase.

Posted under Big Data Computing

Answer: (c).They are stored in separate output files. Explanation:Output records with the same hash value are stored in separate output files in the MapReduce program.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. How does the MapReduce program handle output records with the same hash value?
Add Comment

Similar Questions

Discover Related MCQs

Q. What is the role of the control program in the implementation of PageRank using MapReduce?

View solution

Q. What characteristic of MapReduce contributes to its high fault tolerance?

View solution

Q. What is the typical number of Reduce instances in a MapReduce program?

View solution

Q. What is the primary function of the MapReduce scheduler?

View solution

Q. What are the two crucial aspects that enable parallel execution in database systems?

View solution

Q. What does the optimizer in a parallel DBMS translate SQL commands into?

View solution

Q. In a parallel DBMS, when does the filter subquery in a SQL command get performed in parallel?

View solution

Q. What is the final step required in a parallel DBMS after performing a hash join and calculating preliminary aggregate functions?

View solution

Q. Why is there a need for interfaces between MapReduce systems and DBMSs?

View solution

Q. What is the result of integrating MapReduce and DBMSs for complex analytical problems?

View solution

Q. What is the primary purpose of the MapReduce system in the context of interfacing with DBMSs?

View solution

Q. What is the primary focus of machine learning?

View solution

Q. Which type of learning is often used in knowledge discovery, data mining, and machine learning?

View solution

Q. What are the two main goals of the learning from data process?

View solution

Q. In supervised learning, how are the classes determined?

View solution

Q. What is one of the basic tasks in supervised learning?

View solution

Q. What distinguishes unsupervised learning from supervised learning?

View solution

Q. What is a common goal of unsupervised learning?

View solution

Q. Why is machine learning well-suited for handling Big Data?

View solution

Q. What types of tasks are strengths of machine learning algorithms in the context of Big Data?

View solution
View All MCQs on Big Data Computing

Suggested Topics

Are you eager to expand your knowledge beyond Big Data Computing? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

Object Oriented Programming

Enhance your coding skills with our Object Oriented Programming MCQs. Understand...

Visual Basic

Enhance your knowledge of Microsoft's event-driven programming language with our...

Computer Graphics

Step into the visual side of computing with our Computer Graphics MCQs. Cover topics...

Data Structures and Algorithms

Journey through the fundamentals of Data Structures and Algorithms with our extensive...

CSS

Polish your web design skills with our CSS MCQs. Learn about selectors, properties,...

Digital Logic Design

Understand the foundation of digital computers with our Digital Logic Design MCQs....

Data Warehousing and OLAP

Strengthen your knowledge of Data Warehousing and OLAP with our specialized MCQs....

Discrete Mathematics

Refine your mathematical skills essential for computer science with our Discrete...

Python

Dive into one of the most popular languages with our Python MCQs. Understand...