adplus-dvertising
frame-decoration

Question

Point out the wrong statement.

a.

Reducer has 2 primary phases

b.

Increasing the number of reduces increases the framework overhead, but increases load balancing and lowers the cost of failures

c.

It is legal to set the number of reduce-tasks to zero if no reduction is desired

d.

The framework groups Reducer inputs by keys (since different mappers may have output the same key) in sort stage

Posted under Hadoop

Answer: (a).Reducer has 2 primary phases

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Point out the wrong statement.
Add Comment

Similar Questions

Discover Related MCQs

Q. Point out the correct statement.

View solution

Q. Point out the wrong statement.

View solution

Q. Point out the correct statement.

View solution

Q. Point out the wrong statement.

View solution

Q. Point out the correct statement.

View solution

Q. Point out the wrong statement.

View solution

Q. Point out the correct statement.

View solution

Q. Point out the wrong statement.

View solution

Q. Point out the correct statement.

View solution

Q. Point out the wrong statement.

View solution

Q. The MapReduce algorithm contains two important tasks, namely __________.

View solution

Q. _____ takes a set of data and converts it into another set of data, where individual elements are broken down into tuples (key/value pairs).

View solution

Q. ______ task, which takes the output from a map as an input and combines those data tuples into a smaller set of tuples.

View solution

Q. In how many stages the MapReduce program executes?

View solution

Q. Which of the following is used to schedules jobs and tracks the assign jobs to Task tracker?

View solution

Q. Which of the following is used for an execution of a Mapper or a Reducer on a slice of data?

View solution

Q. Which of the following commnd runs a DFS admin client?

View solution
View All MCQs on Hadoop

Suggested Topics

Are you eager to expand your knowledge beyond Hadoop? 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!

Hadoop

Dive into the world of big data with our Hadoop MCQs. Cover key concepts including...

C# programming

Hone your skills in the C# language with our MCQs. Understand data types, operators,...

Python

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

Computer Hardware

Explore the tangible components of computers with our Computer Hardware MCQs. Learn...

Cloud Computing

Stay on top of the biggest trend in IT with our Cloud Computing MCQs. These questions...

UNIX

Become proficient with the Unix operating system using our UNIX MCQs. Learn about...

Internet of Things (IoT)

Discover how devices communicate with each other in the smart world with our IoT...

CSS

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

SQL Server

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