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

1. For each input key-value pair, mappers can emit:

A) As many intermediate key-value pairs as designed. There are no restrictions on the types of those key-value pairs (i.e., they can be heterogeneous).
B) As many intermediate key-value pairs as designed, as long as all the keys have the same types and all the values have the same type.
C) One intermediate key-value pair, but of the same type.
D) One intermediate key-value pair, of a different type.
E) As many intermediate key-value pairs as designed, but they cannot be of the same type as the input key-value pair.

2. Workflows expressed in Oozie can contain:

A) Sequences of MapReduce and Pig. These sequences can be combined with other actions including forks, decision points, and path joins.
B) Sequences of MapReduce and Pig jobs. These are limited to linear sequences of actions with exception handlers but no forks.
C) Sequences of MapReduce job only; on Pig on Hive tasks or jobs. These MapReduce sequences can be combined with forks and path joins.
D) Iterntive repetition of MapReduce jobs until a desired answer or state is reached.

3. Indentify which method in the Mapper you should use to implement code for reading the file and populating the associative array?

A) init
B) map
C) configure
D) combine

4. Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?

A) ApplicationMasterService
B) ApplicationMaster
C) TaskTracker
D) ResourceManager
E) JobTracker
F) NodeManager

5. Which TWO of the following statements are true regarding Hive? Choose 2 answers

A) Offers real-time queries and row level updates
B) Is a relational database
C) Allows you to define a structure for your unstructured Big Data
D) Useful for data analysts familiar with SQL who need to do ad-hoc queries

Solutions: