APACHE-HADOOP-DEVELOPER Exam Questions & Answers

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APACHE-HADOOP-DEVELOPER Exam Questions & Answers

Vendor: Hortonworks

Certifications: HCAHD


Exam Name: Hadoop 2.0 Certification exam for Pig and Hive Developer

Updated: Mar 24, 2023

Q&As: 108

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APACHE-HADOOP-DEVELOPER Online Practice Questions and Answers

Questions 1

Which best describes what the map method accepts and emits?

A. It accepts a single key-value pair as input and emits a single key and list of corresponding values as output.

B. It accepts a single key-value pairs as input and can emit only one key-value pair as output.

C. It accepts a list key-value pairs as input and can emit only one key-value pair as output.

D. It accepts a single key-value pairs as input and can emit any number of key-value pair as output, including zero.

Show Answer
Questions 2

Which process describes the lifecycle of a Mapper?

A. The JobTracker calls the TaskTracker's configure () method, then its map () method and finally its close () method.

B. The TaskTracker spawns a new Mapper to process all records in a single input split.

C. The TaskTracker spawns a new Mapper to process each key-value pair.

D. The JobTracker spawns a new Mapper to process all records in a single file.

Show Answer
Questions 3

You wrote a map function that throws a runtime exception when it encounters a control character in input data. The input supplied to your mapper contains twelve such characters totals, spread across five file splits. The first four file splits each have two control characters and the last split has four control characters.

Indentify the number of failed task attempts you can expect when you run the job with set to 4:

A. You will have forty-eight failed task attempts

B. You will have seventeen failed task attempts

C. You will have five failed task attempts

D. You will have twelve failed task attempts

E. You will have twenty failed task attempts

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