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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Processing | - End-to-end Hadoop workflows
|
| Data Ingestion | - Import data into Hadoop
|
| Data Analysis with Hive | - Hive query development
|
| Data Transformation with Pig | - Pig Latin programming
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
Consider the following two relations, A and B.
A Pig JOIN statement that combined relations A by its first field and B by its second field would produce what output?
- A. 2 cherry 2 cherry 3 orange 4 peach
- B. 2 Jim Chris 2 3 Terry 3 4 Brian 4
- C. 2 cherry Jim, Chris 3 orange Terry 4 peach Brian
- D. 2 cherry Jim 2 2 cherry Chris 2 3 orange Terry 3 4 peach Brian 4
Correct Answer: D 🗳️
Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?
- A. JobTracker
- B. ApplicationMaster
- C. ResourceManager
- D. ApplicationMasterService
- E. NodeManager
- F. TaskTracker
Correct Answer: E 🗳️
Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).
For each input key-value pair, mappers can emit:
- A. As many intermediate key-value pairs as designed. There are no restrictions on the types of those key-value pairs (i.e., they can be heterogeneous).
- B. One intermediate key-value pair, but of the same type.
- C. One intermediate key-value pair, of a different type.
- D. As many intermediate key-value pairs as designed, but they cannot be of the same type as the input key-value pair.
- E. As many intermediate key-value pairs as designed, as long as all the keys have the same types and all the values have the same type.
Correct Answer: E 🗳️
Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).
Identify the tool best suited to import a portion of a relational database every day as files into HDFS, and generate Java classes to interact with that imported data?
- A. Sqoop
- B. Flume
- C. Hue
- D. fuse-dfs
- E. Oozie
- F. Hive
- G. Pig
Correct Answer: A 🗳️
Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).
Assuming default settings, which best describes the order of data provided to a reducer's reduce method:
- A. Both the keys and values passed to a reducer always appear in sorted order.
- B. The keys given to a reducer aren't in a predictable order, but the values associated with those keys always are.
- C. Neither keys nor values are in any predictable order.
- D. The keys given to a reducer are in sorted order but the values associated with each key are in no predictable order
Correct Answer: D 🗳️
Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).
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