adplus-dvertising
frame-decoration

Question

What is the purpose of the copy phase in reduce tasks?

a.

To copy the map output data to the local disk

b.

To copy the reduce output data to the distributed file system

c.

To request data partitions from nodes where map tasks ran

d.

To sort the map output data

Posted under Big Data Computing

Answer: (c).To request data partitions from nodes where map tasks ran Explanation:The copy phase in reduce tasks is used to request data partitions from nodes where map tasks ran.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. What is the purpose of the copy phase in reduce tasks?
Add Comment

Similar Questions

Discover Related MCQs

Q. When does a map task write its partial output data to disk?

View solution

Q. What is the purpose of the circular memory buffer in a map task?

View solution

Q. What is the role of splits in the MapReduce process?

View solution

Q. How does HDFS ensure fault tolerance for data blocks?

View solution

Q. What is the purpose of the replication factor in HDFS?

View solution

Q. What is the default block size in HDFS?

View solution

Q. What is the role of the namenode in HDFS?

View solution

Q. What is the primary design goal of the Hadoop Distributed File System (HDFS)?

View solution

Q. Why does the Hadoop master represent a single point of failure?

View solution

Q. What is the default number of map and reduce slots on a tasktracker in Hadoop?

View solution

Q. How does the jobtracker divide input data in a Hadoop MapReduce cluster?

View solution

Q. In a MapReduce job, what is the unit of work that users submit to the jobtracker?

View solution

Q. What is the role of the master node in a Hadoop MapReduce cluster?

View solution

Q. What is the primary purpose of the HBase database?

View solution

Q. What is the key advantage of Hadoop's distributed file system, HDFS?

View solution

Q. How does Skynet handle worker node failures in its MapReduce implementation?

View solution

Q. What is the primary language used for writing MapReduce programs in Disco?

View solution

Q. Which of the following companies was one of the early adopters of Hadoop, using it to generate their search index?

View solution

Q. What does HBase provide, and what is it built on top of?

View solution

Q. Which subproject of Hadoop provides the common utilities and interfaces supporting other Hadoop subprojects?

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!

SQL Server

Master Microsoft's database server with our SQL Server MCQs. Topics cover database...

Data Warehousing and OLAP

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

Java Spring Framework

Enhance your Java development skills with our Spring Framework MCQs. Learn about...

Artificial Intelligence

Get started on the path to the future with our Artificial Intelligence MCQs. Covering...

Object Oriented Programming Using C++

Enhance your programming skills with our MCQs on Object Oriented Programming using...

Computer Architecture

Unveil the science behind computer design with our Computer Architecture MCQs. Topics...

Neural Networks

Dive into the world of Artificial Intelligence with our Neural Networks MCQs. Uncover...

CSS

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

MySQL Database

Enhance your knowledge of relational databases with our MySQL MCQs. Understand...