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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Ingestion | - Import data into Hadoop
|
| Data Analysis with Hive | - Hive query development
|
| Data Transformation with Pig | - Pig Latin programming
|
| Data Processing | - End-to-end Hadoop workflows
|
Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:
Which one of the following statements is true about a Hive-managed table?
- A. Hive dynamically defines the schema of the table based on the format of the underlying data.
- B. When the table is dropped, the underlying folder in HDFS is deleted.
- C. Records can only be added to the table using the Hive INSERT command.
- D. Hive dynamically defines the schema of the table based on the FROM clause of a SELECT query.
Correct Answer: B 🗳️
Review the following 'data' file and Pig code.
Which one of the following statements is true?
- A. The output of the dump d command is (M, {(38,95in),(62,95i02)})
- B. The code does not execute successfully because D is not a valid relation
- C. The code executes successfully but there is not output because the D relation is empty
- D. The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})
Correct Answer: D 🗳️
You need to move a file titled "weblogs" into HDFS. When you try to copy the file, you can't. You know you have ample space on your DataNodes. Which action should you take to relieve this situation and store more files in HDFS?
- A. Increase the amount of memory for the NameNode.
- B. Decrease the block size on all current files in HDFS.
- C. Decrease the block size on your remaining files.
- D. Increase the block size on all current files in HDFS.
- E. Increase the number of disks (or size) for the NameNode.
- F. Increase the block size on your remaining files.
Correct Answer: C 🗳️
Given a directory of files with the following structure: line number, tab character, string:
Example:
1abialkjfjkaoasdfjksdlkjhqweroij
2kadfjhuwqounahagtnbvaswslmnbfgy
3kjfteiomndscxeqalkzhtopedkfsikj
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. BDBInputFormat
- B. SequenceFileAsTextInputFormat
- C. SequenceFileInputFormat
- D. KeyValueFileInputFormat
Correct Answer: D 🗳️
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What are the TWO main components of the YARN ResourceManager process? Choose 2 answers
- A. Applications Manager
- B. Job Tracker
- C. Scheduler
- D. Task Tracker
Correct Answer: A,C 🗳️
