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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Hadoop Ecosystem Integration | - Data ingestion and ETL workflows - HDFS interaction - MapReduce basics |
| Topic 2: Data Warehousing with Hive | - Advanced Hive features
|
| Topic 3: Data Processing with Pig | - Pig Latin fundamentals
|
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
When is the earliest point at which the reduce method of a given Reducer can be called?
- A. As soon as at least one mapper has finished processing its input split.
- B. As soon as a mapper has emitted at least one record.
- C. It depends on the InputFormat used for the job.
- D. Not until all mappers have finished processing all records.
Correct Answer: D 🗳️
On a cluster running MapReduce v1 (MRv1), a TaskTracker heartbeats into the JobTracker on your
cluster, and alerts the JobTracker it has an open map task slot.
What determines how the JobTracker assigns each map task to a TaskTracker?
- A. The amount of RAM installed on the TaskTracker node.
- B. The number and speed of CPU cores on the TaskTracker node.
- C. The average system load on the TaskTracker node over the past fifteen (15) minutes.
- D. The amount of free disk space on the TaskTracker node.
- E. The location of the InsputSplit to be processed in relation to the location of the node.
Correct Answer: E 🗳️
You have written a Mapper which invokes the following five calls to the OutputColletor.collect method:
output.collect (new Text ("Apple"), new Text ("Red") ) ;
output.collect (new Text ("Banana"), new Text ("Yellow") ) ;
output.collect (new Text ("Apple"), new Text ("Yellow") ) ;
output.collect (new Text ("Cherry"), new Text ("Red") ) ;
output.collect (new Text ("Apple"), new Text ("Green") ) ;
How many times will the Reducer's reduce method be invoked?
- A. 0
- B. 1
- C. 6
- D. 5
- E. 3
Correct Answer: E 🗳️
Examine the following Hive statements:
Assuming the statements above execute successfully, which one of the following statements is true?
- A. The SORT BY command causes only one reducer to be used
- B. The output is guaranteed to be a single file with all the data sorted by age
- C. Each reducer generates a file sorted by age
- D. The output of each reducer is only the age column
Correct Answer: C 🗳️
You have user profile records in your OLPT database, that you want to join with web logs you have
already ingested into the Hadoop file system. How will you obtain these user records?
- A. Ingest with Hadoop Streaming
- B. Hive LOAD DATA command
- C. Ingest with Flume agents
- D. Sqoop import
- E. HDFS command
- F. Pig LOAD command
Correct Answer: D 🗳️
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