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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

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

1. Which two of the following are true about this trivial Pig program' (choose Two)

A) The contents of myfile appear on stdout
B) myfile is read from the user's home directory in HDFS
C) ABC has a schema associated with it
D) Pig assumes the contents of myfile are comma delimited

2. 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) There are no concerns with this approach. It is always advisable to use multiple reduces.
D) By using multiple reducers with the default HashPartitioner, output files may not be in globally sorted order.

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

4. Which one of the following statements describes the relationship between the NodeManager and the ApplicationMaster?

A) The ApplicationMaster starts the NodeManager outside of a Container
B) The NodeManager creates an instance of the ApplicationMaster
C) The ApplicationMaster starts the NodeManager in a Container
D) The NodeManager requests resources from the ApplicationMaster

5. Review the following data and Pig code:

What command to define B would produce the output (M,62,95l02) when invoking the DUMP operator on B?

A) B= GROUP A BY (zip = = '95102' AND gender = = 'M');
B) B= FOREACH A BY (gender = = 'M' AND zip = = '95102');
C) B = FILTER A BY (zip = = '95102' AND gender = = M");
D) B = JOIN A BY (gender = = 'M' AND zip = = '95102');

Solutions: