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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Hive Development | - Hive optimization and execution - Hive table definitions and queries |
| Hadoop Core Concepts | - HDFS architecture and commands - YARN and MapReduce fundamentals |
| Pig Development | - Pig data types and UDFs - Pig Latin scripting |
| Hadoop Ecosystem Tools | - Workflow and processing frameworks - Sqoop and data ingestion |
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
What is the disadvantage of using multiple reducers with the default HashPartitioner and distributing your
workload across you cluster?
- A. You will longer be able to take advantage of a Combiner.
- B. You will not be able to compress the intermediate data.
- C. By using multiple reducers with the default HashPartitioner, output files may not be in globally sorted
order. - D. There are no concerns with this approach. It is always advisable to use multiple reduces.
Correct Answer: C 🗳️
Which HDFS command displays the contents of the file x in the user's HDFS home directory?
- A. hadoop fs -cat x
- B. hadoop fs -Is x
- C. hadoop fs -cp x
- D. hdfs fs -get x
Correct Answer: A 🗳️
Given the following Hive command:
INSERT OVERWRITE TABLE mytable SELECT * FROM myothertable;
Which one of the following statements is true?
- A. The statement is not a valid Hive command
- B. Any existing data in mytable will be overwritten
- C. The contents of myothertable are appended to mytable
- D. A new table named mytable is created, and the contents of myothertable are copied into mytable
Correct Answer: B 🗳️
You want to populate an associative array in order to perform a map-side join. You've decided to put this
information in a text file, place that file into the DistributedCache and read it in your Mapper before any
records are processed. Indentify which method in the Mapper you should use to implement code for
reading the file and populating the associative array?
- A. map
- B. combine
- C. init
- D. configure
Correct Answer: D 🗳️
Examine the following Pig commands:
Which one of the following statements is true?
- A. The SAMPLE command generates an "unexpected symbol" error
- B. The reducers will only output the first 20% of the data passed from the mappers
- C. Each MapReduce task will terminate after executing for 0.2 minutes
- D. A random sample of approximately 20% of the data will be output
Correct Answer: D 🗳️
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