Advanced MapReduce Concepts MCQ question and answer with solution

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Each section contains 100 MCQs on Advanced MapReduce Concepts .

What is the significance of the Hadoop MapReduce "MapReduce over HBase" in advanced MapReduce?

A) Process data stored in HBase B) Process data stored in HDFS C) Execute MapReduce jobs D) Manage computation resources

Discuss

Answer & Solution

Answer: Option A

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

In advanced MapReduce, what is the purpose of the Hadoop MapReduce "Map Output Compression"?

A) Compress the map output data B) Compress the reduce output data C) Decompress the map output data D) Decompress the reduce output data

Discuss

Answer & Solution

Answer: Option A

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

What does the term "MapReduce speculative execution" refer to in advanced MapReduce?

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

In advanced MapReduce, what is the primary purpose of the Hadoop MapReduce "OutputCommitter"?

A) Manage storage layer B) Manage computation resources 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

What is the primary function of the Hadoop MapReduce "Map-side Join" technique?

A) Join data on the mapper side B) Join data on the reducer side 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

In advanced MapReduce, what is the purpose of the Hadoop MapReduce "Map-side Filtering" technique?

A) Filter data on the mapper side B) Filter data on the reducer side 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

What is the role of the Hadoop MapReduce "Map Output Sorting" in advanced MapReduce?

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

Discuss

Answer & Solution

Answer: Option A

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

In advanced MapReduce, what is the significance of the Hadoop MapReduce "MapReduce speculative execution"?

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

What is the primary purpose of the Hadoop MapReduce "In-Mapper Combining" technique?

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

In advanced MapReduce, what is the purpose of the Hadoop MapReduce "Map-side Aggregation" technique?

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

Discuss

Answer & Solution

Answer: Option B

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

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