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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Apache Pig Development | 30% | - Write and optimize Pig Latin scripts - Data transformation, filtering, joining, and aggregation - Debug and tune Pig jobs |
| Topic 2: Apache Hive Development | 25% | - Use Hive functions, views, and metastore - Write and optimize HiveQL queries - Create and manage Hive tables, partitions, and buckets |
| Topic 3: Hadoop Fundamentals & Architecture | 20% | - YARN architecture and job execution - HDFS operations and file management - MapReduce concepts and job lifecycle |
| Topic 4: Data Ingestion | 25% | - Ingest streaming data with Flume - Import/export data using Sqoop - Load data into HDFS from external sources |
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
You have the following key-value pairs as output from your Map task:
(the, 1) (fox, 1) (faster, 1) (than, 1) (the, 1) (dog, 1)
How many keys will be passed to the Reducer's reduce method?
- A. Six
- B. Two
- C. Four
- D. Three
- E. One
- F. Five
Correct Answer: F 🗳️
Explanation: Only visible for TrainingDumps members. You can sign-up / login (it's free).
What are the TWO main components of the YARN ResourceManager process? Choose 2 answers
- A. Job Tracker
- B. Scheduler
- C. Applications Manager
- D. Task Tracker
Correct Answer: B,C 🗳️
Indentify the utility that allows you to create and run MapReduce jobs with any executable
or script as the mapper and/or the reducer?
- A. mapred
- B. Flume
- C. Oozie
- D. Sqoop
- E. Hadoop Streaming
Correct Answer: E 🗳️
Explanation: Only visible for TrainingDumps members. You can sign-up / login (it's free).
You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?
- A. Three, the pound sign is an invalid character for HDFS file names
- B. None, the directory cannot be named jobdata
- C. One, no special characters can prefix the name of an input file
- D. Two, file names with a leading period or underscore are ignored
- E. Four, all files will be processed
Correct Answer: D 🗳️
Explanation: Only visible for TrainingDumps members. You can sign-up / login (it's free).
Which one of the following statements is true regarding a MapReduce job?
- A. The job's Partitioner shuffles and sorts all (key.value) pairs and sends the output to all reducers
- B. The reduce method is invoked once for each unique value
- C. The Mapper must sort its output of (key.value) pairs in descending order based on value
- D. The default Hash Partitioner sends key value pairs with the same key to the same Reducer
Correct Answer: A 🗳️
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