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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Data Processing with Pig | - Advanced Pig processing
|
| Topic 2: Data Warehousing with Hive | - Advanced Hive features
|
| Topic 3: Hadoop Ecosystem Integration | - Data ingestion and ETL workflows - HDFS interaction - MapReduce basics |
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
Given the following Hive command:
INSERT OVERWRITE TABLE mytable SELECT * FROM myothertable;
Which one of the following statements is true?
- A. The contents of myothertable are appended to mytable
- B. A new table named mytable is created, and the contents of myothertable are copied into mytable
- C. The statement is not a valid Hive command
- D. Any existing data in mytable will be overwritten
Correct Answer: D 🗳️
You want to run Hadoop jobs on your development workstation for testing before you submit them to your
production cluster. Which mode of operation in Hadoop allows you to most closely simulate a production
cluster while using a single machine?
- A. Run all the nodes in your production cluster as virtual machines on your development workstation.
- B. Run the hadoop command with the -jt local and the -fs file:///options.
- C. Run simldooop, the Apache open-source software for simulating Hadoop clusters.
- D. Run the DataNode, TaskTracker, NameNode and JobTracker daemons on a single machine.
Correct Answer: D 🗳️
Examine the following Hive statements:
Assuming the statements above execute successfully, which one of the following statements is true?
- A. The output of each reducer is only the age column
- 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 SORT BY command causes only one reducer to be used
Correct Answer: C 🗳️
Indentify which best defines a SequenceFile?
- A. A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects
- B. A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in
sorted order. - C. A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects
- D. A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be
the same type. Each value must be the same type.
Correct Answer: D 🗳️
Workflows expressed in Oozie can contain:
- A. Iterntive repetition of MapReduce jobs until a desired answer or state is reached.
- B. Sequences of MapReduce and Pig. These sequences can be combined with other actions including
forks, decision points, and path joins. - C. Sequences of MapReduce job only; on Pig on Hive tasks or jobs. These MapReduce sequences can
be combined with forks and path joins. - D. Sequences of MapReduce and Pig jobs. These are limited to linear sequences of actions with
exception handlers but no forks.
Correct Answer: B 🗳️
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