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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Warehousing with Hive | - HiveQL fundamentals
|
| Hadoop Ecosystem Integration | - HDFS interaction - MapReduce basics - Data ingestion and ETL workflows |
| Data Processing with Pig | - Advanced Pig processing
|
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
Consider the following two relations, A and B.
Which Pig statement combines A by its first field and B by its second field?
- A. C = JOIN A by al, B by b2;
- B. C = DOIN B BY a1, A by b2;
- C. C = JOIN A SO, B $1;
- D. C = JOIN A a1, B b2;
Correct Answer: A 🗳️
What are the TWO main components of the YARN ResourceManager process? Choose 2 answers
- A. Job Tracker
- B. Task Tracker
- C. Scheduler
- D. Applications Manager
Correct Answer: C,D 🗳️
You use the hadoop fs -put command to write a 300 MB file using and HDFS block size of 64 MB. Just
after this command has finished writing 200 MB of this file, what would another user see when trying to
access this life?
- A. They would see no content until the whole file written and closed.
- B. They would see the current of the file through the last completed block.
- C. They would see Hadoop throw an ConcurrentFileAccessException when they try to access this file.
- D. They would see the current state of the file, up to the last bit written by the command.
Correct Answer: B 🗳️
Given a directory of files with the following structure:
line number, tab character, string:
Example:
1 abialkjfjkaoasdfjksdlkjhqweroij
2 kadfjhuwqounahagtnbvaswslmnbfgy
3 kjfteiomndscxeqalkzhtopedkfsikj
You want to send each line as one record to your Mapper. Which InputFormat should you use to complete
the line: conf.setInputFormat (____.class) ; ?
- A. SequenceFileInputFormat
- B. SequenceFileAsTextInputFormat
- C. KeyValueFileInputFormat
- D. BDBInputFormat
Correct Answer: C 🗳️
You need to perform statistical analysis in your MapReduce job and would like to call methods in the
Apache Commons Math library, which is distributed as a 1.3 megabyte Java archive (JAR) file. Which is
the best way to make this library available to your MapReducer job at runtime?
- A. Have your system administrator copy the JAR to all nodes in the cluster and set its location in the
HADOOP_CLASSPATH environment variable before you submit your job. - B. Have your system administrator place the JAR file on a Web server accessible to all cluster nodes and
then set the HTTP_JAR_URL environment variable to its location. - C. When submitting the job on the command line, specify the -libjars option followed by the JAR file path.
- D. Package your code and the Apache Commands Math library into a zip file named JobJar.zip
Correct Answer: C 🗳️
