Advanced MapReduce Concepts MCQ question and answer with solution

1

What is the purpose of the Hadoop Distributed Cache in MapReduce?

A) Store intermediate data B) Cache files for tasks C) Manage computation resources D) Execute MapReduce jobs

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

2

In Hadoop MapReduce, what is the role of the Hadoop Counters?

A) Track the progress of MapReduce jobs B) Manage computation resources C) Execute MapReduce jobs D) Manage Hadoop ecosystem tools

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

3

What is the function of the Hadoop InputSplit in MapReduce?

A) Represents a chunk of input data B) Combine intermediate key-value pairs on the mapper side C) Aggregate values on the reducer side D) Convert data into a binary format

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

4

In advanced MapReduce, what is the significance of the Hadoop Combiner class?

A) Combine intermediate key-value pairs on the mapper side B) Aggregate values on the reducer side C) Sort and shuffle data D) Distribute data to reducers

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

5

What does the term "MapReduce chaining" refer to in advanced MapReduce?

A) Execution of multiple MapReduce jobs in sequence B) Chaining multiple Map and Reduce tasks in a single job C) Combining multiple MapReduce jobs D) Parallel execution of Map tasks

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

6

In advanced MapReduce, what is the purpose of the Hadoop MapReduce "Side Data Distribution"?

A) Distribute data to reducers B) Share data between Map and Reduce tasks C) Manage computation resources D) Execute MapReduce jobs

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

7

What is the primary function of the Hadoop MapReduce "Secondary Sort"?

A) Sort keys within a reducer B) Sort keys across multiple reducers C) Sort keys on the mapper side D) Sort keys on the reducer side

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

8

In advanced MapReduce, what is the role of the Hadoop Job History Server?

A) Manage computation resources B) Store historical information about completed jobs C) Execute MapReduce jobs D) Manage Hadoop ecosystem tools

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

9

What is the significance of the Hadoop MapReduce "Custom InputFormat" in advanced MapReduce?

A) Customize the way input data is read B) Customize the way map output is formatted C) Customize the way reduce output is formatted D) Customize the partitioning logic

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

10

In advanced MapReduce, what does the term "MapReduce speculative execution" refer to?

A) Execute multiple Map tasks in parallel B) Execute a backup task if the original task is slow C) Execute Map and Reduce tasks simultaneously D) Execute tasks in a distributed environment

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Advanced MapReduce Concepts MCQ question and answer with solution | Hadoop MCQs