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Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:

1. What are the TWO main components of the YARN ResourceManager process? Choose 2 answers

A) Applications Manager
B) Scheduler
C) Task Tracker
D) Job Tracker

2. 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 = DOIN B BY a1, A by b2;
B) C = JOIN A SO, B $1;
C) C = JOIN A a1, B b2;
D) C = JOIN A by al, B by b2;

3. 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 the current state of the file, up to the last bit written by the command.
B) They would see the current of the file through the last completed block.
C) They would see no content until the whole file written and closed.
D) They would see Hadoop throw an ConcurrentFileAccessException when they try to access this file.

4. Which one of the following statements is false about HCatalog?

A) Provides a shared schema mechanism
B) Designed to be used by other programs such as Pig, Hive and MapReduce
C) Exists as a subproject of Hive
D) Stores HDFS data in a database for performing SQL-like ad-hoc queries

5. 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) SequenceFileAsTextInputFormat
B) SequenceFileInputFormat
C) KeyValueFileInputFormat
D) BDBInputFormat

Solutions: