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

1. Which one of the following statements describes a Pig bag. tuple, and map, respectively?

A) Unordered collection of tuples, ordered set of fields, set of key value pairs
B) Ordered collection of maps, ordered collection of bags, and unordered set of key/value pairs
C) Unordered collection of maps, ordered collection of tuples, ordered set of key/value pairs
D) Ordered set of fields, ordered collection of tuples, ordered collection of maps

2. What does the following command do?
register '/piggyban):/pig-files.jar';

A) Invokes the user-defined functions contained in the jar file
B) Transforms Pig user-defined functions into a format that Hive can accept
C) Specifies the location of the JAR file containing the user-defined functions
D) Assigns a name to a user-defined function or streaming command

3. In a MapReduce job, the reducer receives all values associated with same key. Which statement best describes the ordering of these values?

A) The values are arbitrary ordered, but multiple runs of the same MapReduce job will always have the same ordering.
B) The values are arbitrarily ordered, and the ordering may vary from run to run of the same MapReduce job.
C) The values are in sorted order.
D) Since the values come from mapper outputs, the reducers will receive contiguous sections of sorted values.

4. You wrote a map function that throws a runtime exception when it encounters a control character in input data. The input supplied to your mapper contains twelve such characters totals, spread across five file splits. The first four file splits each have two control characters and the last split has four control characters.
Indentify the number of failed task attempts you can expect when you run the job with mapred.max.map.attempts set to 4:

A) You will have forty-eight failed task attempts
B) You will have five failed task attempts
C) You will have seventeen failed task attempts
D) You will have twelve failed task attempts
E) You will have twenty failed task attempts

5. 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

Solutions: